APA (7th ed.) Citation

Pepperberg, I. M. (2000). The Alex studies: Cognitive and communicative abilities of grey parrots (2. print.). Harvard Univ. Press.

Chicago Style (17th ed.) Citation

Pepperberg, Irene M. The Alex Studies: Cognitive and Communicative Abilities of Grey Parrots. 2. print. Cambridge, Mass. [u.a.]: Harvard Univ. Press, 2000.

MLA (9th ed.) Citation

Pepperberg, Irene M. The Alex Studies: Cognitive and Communicative Abilities of Grey Parrots. 2. print. Harvard Univ. Press, 2000.