Dyfyniad APA

(1967). Socio-economic models in geography. London: Methuen.

Dyfyniad Arddull Chicago

Socio-economic Models in Geography. London: Methuen, 1967.

Dyfyniad MLA

Socio-economic Models in Geography. London: Methuen, 1967.

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