Dyfyniad APA

Clarke, J. I. (1972). Population geography (2nd ed.). Pergamon Press.

Dyfyniad Arddull Chicago

Clarke, John Innes. Population Geography. 2nd ed. Oxford: Pergamon Press, 1972.

Dyfyniad MLA

Clarke, John Innes. Population Geography. 2nd ed. Pergamon Press, 1972.

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