Coloma, L. A. y Ron, S. 2004. Hyloscirtus staufferorum. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 13 February 2015.

Bolívar, W., Coloma, L. A., Ron, S. y Renjifo, J. M. 2004. Hyloscirtus larinopygion. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 27 February 2015.

Icochea, J., Coloma, L. A., Ron, S., Cisneros-Heredia, D. F., Angulo, A. y Jungfer, K. 2004. Gastrotheca longipes. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 16 March 2015.

Coloma, L. A. y Ron, S. 2004. Hyloscirtus ptychodactylus. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 25 February 2015.

Coloma, L. A., Ron, S. y Morales, M. 2004. Gastrotheca litonedis. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 19 March 2015.

Bolívar, W., Coloma, L. A., Ron, S. y Jungfer, K. 2004. Gastrotheca angustifrons. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 20 March 2015.

Coloma, L. A., Ron, S., Lynch, J. D. y Lehr, E. 2004. Gastrotheca weinlandii. The IUCN Red List of Threatened Species. Version 2014.3. www.iucnredlist.org. Downloaded on 18 March 2015.

Rodríguez, L., J. L. Martínez, J. Icochea, and A. Angulo. 2004c. Pristimantis delius. The IUCN Red List of Threatened Species 2004: e.T56555A11496733. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56555A11496733.en

Rodríguez, L., J. L. Martínez, C. Azevedo-Ramos, L. A. Coloma, S. R. Ron, F. Castro, J. V. Rueda-Almonacid, M. Hoogmoed, M. J. Icochea, and A. Angulo. 2004a. Pristimantis carvalhoi (errata version published in 2016). The IUCN Red List of Threatened Species 2004: e.T56496A86638051. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56496A11475637.en

Rodríguez, L., J. L. Martínez, L. A. Coloma, and S. R. Ron. 2004j. Pristimantis peruvianus. The IUCN Red List of Threatened Species 2004: e.T56848A11544554. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56848A11544554.en

Castro, F., Ron, S.R., Coloma, L. A., Morales, M. and Cisneros-Heredia, D. 2004g. Pristimantis labiosus. The IUCN Red List of Threatened Species 2004: e.T56694A11508394. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56694A11508394.en

Castro, F., Ron, S.R., Coloma, L. A., Cisneros-Heredia, D. and Morales, M. 2004k. Pristimantis subsigillatus. The IUCN Red List of Threatened Species 2004: e.T56981A11549928. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56981A11549928.en

Castro, F., Ron, S.R., Coloma, L. A., Cisneros-Heredia, D.F., Yánez-Muñoz, M. and Bolívar, W. 2004c. Pristimantis appendiculatus. The IUCN Red List of Threatened Species 2004: e.T56429A86476191. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56429A11477101.en

Coloma, L. A., S. R. Ron, M. Yánez-Muñoz, and F. Nogales. 2004i. Pristimantis ocreatus. The IUCN Red List of Threatened Species 2004: e.T56804A11534677. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56804A11534677.en

Castro, F., M. Herrera, L. A. Coloma, S. R. Ron, J. Lynch, D. Almeida, F. Nogales, and M. Yánez-Muñoz. 2004e. Pristimantis curtipes (errata version published in 2016). The IUCN Red List of Threatened Species 2004: e.T56546A86451911. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56546A11495307.en

Castro, F., M. I. Herrera, S. R. Ron, L. A. Coloma, D. Almeida, and J. Lynch. 2004f. Pristimantis duellmani. The IUCN Red List of Threatened Species 2004: e.T56571A11498210. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56571A11498210.en

Azevedo-Ramos, C., L. Rodríguez, J. L. Martínez, L. A. Coloma, S. R. Ron, F. Castro, J. V. Rueda, and A. Angulo. 2004b. Pristimantis altamazonicus. The IUCN Red List of Threatened Species 2004: e.T56407A11470948. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T56407A11470948.en