Paper  bibtex   

@article{duellman_anuran_1993,
	title = {Anuran amphibians from the {Cordillera} de {Huancabamba}, northern {Peru}: systematics, ecology, and biogeography},
	volume = {157},
	issn = {0091-7958},
	shorttitle = {Anuran amphibians from the {Cordillera} de {Huancabamba}, northern {Peru}},
	url = {http://www.biodiversitylibrary.org/page/4469099},
	journal = {Occasional Papers of the Museum of Natural History University of Kansas},
	author = {Duellman, William E. and Wild, Erik R.},
	year = {1993},
	pages = {1--53}
}