APA (7th ed.) Citation

Allen, G. R. (1980). All about cockatiels. T.F.H. Publications,Inc..

Chicago Style (17th ed.) Citation

Allen, Gerald R. All About Cockatiels. New Jersey: T.F.H. Publications,Inc., 1980.

MLA (9th ed.) Citation

Allen, Gerald R. All About Cockatiels. T.F.H. Publications,Inc., 1980.

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