APA (7th ed.) Citation

Petrak, M. L. (1969). Diseases of cage and aviary birds. Lea & Febiger.

Chicago Style (17th ed.) Citation

Petrak, Margaret L. Diseases of Cage and Aviary Birds. Philadelphia: Lea & Febiger, 1969.

MLA (9th ed.) Citation

Petrak, Margaret L. Diseases of Cage and Aviary Birds. Lea & Febiger, 1969.

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