Dyfyniad APA

Webster, D. (1971). Towers. Natural History Press.

Dyfyniad Arddull Chicago

Webster, David. Towers. Garden City, N. Y: Natural History Press, 1971.

Dyfyniad MLA

Webster, David. Towers. Natural History Press, 1971.

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