Dyfyniad APA

World bank. (1996). : World resources, 1996-97: The urban environment. Oxford university press.

Dyfyniad Arddull Chicago

World bank. : World Resources, 1996-97: The Urban Environment. New York: Oxford university press, 1996.

Dyfyniad MLA

World bank. : World Resources, 1996-97: The Urban Environment. Oxford university press, 1996.

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