Cita APA

Gill, D. E. (1998). The anurans and the reptiles of Palo Verde National Park Guanacaste province, Costa Rica. [San José, Costa Rica]: [editor no identificado].

Citación estilo Chicago

Gill, Douglas E. The Anurans and the Reptiles of Palo Verde National Park Guanacaste Province, Costa Rica. [San José, Costa Rica]: [editor no identificado], 1998.

Cita MLA

Gill, Douglas E. The Anurans and the Reptiles of Palo Verde National Park Guanacaste Province, Costa Rica. [San José, Costa Rica]: [editor no identificado], 1998.