APA (7th ed.) Citation

(1989). 1990 Audubon nature yearbook. Popular science books.

Chicago Style (17th ed.) Citation

1990 Audubon Nature Yearbook. New York: Popular science books, 1989.

MLA (9th ed.) Citation

1990 Audubon Nature Yearbook. Popular science books, 1989.

Warning: These citations may not always be 100% accurate.