Dyfyniad APA

Villegas-Arguedas, J. C. (2019). Diversity of birds in the coastal zone of the Bahía Ballena and Puerto Cortés, Costa Rica.

Dyfyniad Arddull Chicago

Villegas-Arguedas, Juan Carlos. Diversity of Birds in the Coastal Zone of the Bahía Ballena and Puerto Cortés, Costa Rica. 2019.

Dyfyniad MLA

Villegas-Arguedas, Juan Carlos. Diversity of Birds in the Coastal Zone of the Bahía Ballena and Puerto Cortés, Costa Rica. 2019.

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