Hardin, G. (1961). Biology: Its principles and implications. San Francisco: W. H. Freeman.
Chicago Style citaatHardin, Garret. Biology: Its Principles and Implications. San Francisco: W. H. Freeman, 1961.
MLA citatieHardin, Garret. Biology: Its Principles and Implications. San Francisco: W. H. Freeman, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.