APA

Paulson D., . (1989). Exotic birds. Nova York: The Crescent Books.

Chicago

Paulson Dennis, . 1989. Exotic birds. Nova York: The Crescent Books.

Harvard

Paulson D., . (1989). Exotic birds. Nova York: The Crescent Books.

MLA

Paulson Dennis, . Exotic birds. Nova York: The Crescent Books. 1989.