Gaya APA

Pietà, C, D., Nguyen, S. (2020). Birds of the World: 250 of Earth's Most Majestic Creatures . : Black Dog & Leventhal Publishers Inc.

Gaya MLA

Pietà, Cesare, Della., Nguyen, Shishi. "Birds of the World: 250 of Earth's Most Majestic Creatures". : Black Dog & Leventhal Publishers Inc, 2020. Text.