APA način citiranja

Avalos, G., Soto, A., & Alfaro, W. (2012). Effect of artificial feeders on pollen loads of the hummingbirds of Cerro de La Muerte, Costa Rica.

Čikaški stil citiranja

Avalos, Gerardo, Alejandra Soto, i Willy Alfaro. Effect of Artificial Feeders On Pollen Loads of the Hummingbirds of Cerro De La Muerte, Costa Rica. 2012.

MLA način citiranja

Avalos, Gerardo, Alejandra Soto, i Willy Alfaro. Effect of Artificial Feeders On Pollen Loads of the Hummingbirds of Cerro De La Muerte, Costa Rica. 2012.