Παραπομπή APA

Valerio, A. L., & Laurito, C. A. (2011). First record of fossil birds (Pelecaniformes: Pelecanidae and a probably Odontopterygiformes: Pelagornithidae) from the Upper Miocene of Costa Rica.

Παραπομπή Chicago Style

Valerio, Ana L., και César A. Laurito. First Record of Fossil Birds (Pelecaniformes: Pelecanidae and a Probably Odontopterygiformes: Pelagornithidae) From the Upper Miocene of Costa Rica. 2011.

Παραπομπή MLA

Valerio, Ana L., και César A. Laurito. First Record of Fossil Birds (Pelecaniformes: Pelecanidae and a Probably Odontopterygiformes: Pelagornithidae) From the Upper Miocene of Costa Rica. 2011.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.