Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.