APA Citation

Hardin, G. (1968). 39 steps to biology. San Francisco, California: W.H. Freeman.

Chicago Style Citation

Hardin, Garrett. 39 Steps to Biology. San Francisco, California: W.H. Freeman, 1968.

MLA Citation

Hardin, Garrett. 39 Steps to Biology. San Francisco, California: W.H. Freeman, 1968.

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