Dyfyniad APA

Lewis, W. A. (1970). Tropical development 1880 - 1913: Studies in economic progress. George Allen Unwin.

Dyfyniad Arddull Chicago

Lewis, W. Arthur. Tropical Development 1880 - 1913: Studies in Economic Progress. London: George Allen Unwin, 1970.

Dyfyniad MLA

Lewis, W. Arthur. Tropical Development 1880 - 1913: Studies in Economic Progress. George Allen Unwin, 1970.

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