Dyfyniad APA

Cebula, R. J. (1979). The determinants of human migration. Lexington Books.

Dyfyniad Arddull Chicago

Cebula, Richard J. The Determinants of Human Migration. Lexington, Mass: Lexington Books, 1979.

Dyfyniad MLA

Cebula, Richard J. The Determinants of Human Migration. Lexington Books, 1979.

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