APA (7th ed.) Citation

Amuchástegui, A., & Sick, H. (1967). Studies of birds and mammals of South America. Van Nostrand.

Chicago Style (17th ed.) Citation

Amuchástegui, Axel, and Helmut Sick. Studies of Birds and Mammals of South America. [Princeton, N.J.]: Van Nostrand, 1967.

MLA (9th ed.) Citation

Amuchástegui, Axel, and Helmut Sick. Studies of Birds and Mammals of South America. Van Nostrand, 1967.