Dyfyniad APA

Calhoun, D. H. (1973). The intelligence of a people. Princeton University Press.

Dyfyniad Arddull Chicago

Calhoun, Daniel Hovey. The Intelligence of a People. Princeton, N.J.: Princeton University Press, 1973.

Dyfyniad MLA

Calhoun, Daniel Hovey. The Intelligence of a People. Princeton University Press, 1973.

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