Dyfyniad APA

Hardin, G. (1969). Population evolution birth-control: A college of controversial readings. San Francisco: W. H. Freeman.

Dyfyniad Arddull Chicago

Hardin, Garrett. Population Evolution Birth-control: A College of Controversial Readings. San Francisco: W. H. Freeman, 1969.

Dyfyniad MLA

Hardin, Garrett. Population Evolution Birth-control: A College of Controversial Readings. San Francisco: W. H. Freeman, 1969.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.