Cita APA

Hardin, G. (1961). Biology: Its principles and implications. San Francisco: W. H. Freeman.

Chicago Style Citation

Hardin, Garret. Biology: Its Principles and Implications. San Francisco: W. H. Freeman, 1961.

Cita MLA

Hardin, Garret. Biology: Its Principles and Implications. San Francisco: W. H. Freeman, 1961.

Atenció: Aquestes cites poden no estar 100% correctes.