Dyfyniad APA

Open University Course Team. (1974). Historical demography. Open University Press.

Dyfyniad Arddull Chicago

Open University Course Team. Historical Demography. Open University Press, 1974.

Dyfyniad MLA

Open University Course Team. Historical Demography. Open University Press, 1974.

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