APA aipamena

Pereira, A. I., & Barrantes, G. (2009). Distribution and density of avifauna in Península de Osa, Costa Rica (1990-1991).

Chicago Style aipamena

Pereira, Ana I., y Gilbert Barrantes. Distribution and Density of Avifauna in Península De Osa, Costa Rica (1990-1991). 2009.

MLA aipamena

Pereira, Ana I., y Gilbert Barrantes. Distribution and Density of Avifauna in Península De Osa, Costa Rica (1990-1991). 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.