Dyfyniad APA

Walker, F. (1953). Geography from the air. MEthuen.

Dyfyniad Arddull Chicago

Walker, Frank. Geography from the Air. London: MEthuen, 1953.

Dyfyniad MLA

Walker, Frank. Geography from the Air. MEthuen, 1953.

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