APA (7th ed.) Citation

Radtke, G. A. (1995). A step-by-step book about budgerigars. T.F.H. Publications,Inc..

Chicago Style (17th ed.) Citation

Radtke, Georg A. A Step-by-step Book About Budgerigars. New Jersey: T.F.H. Publications,Inc., 1995.

MLA (9th ed.) Citation

Radtke, Georg A. A Step-by-step Book About Budgerigars. T.F.H. Publications,Inc., 1995.

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