Dyfyniad APA

Richan, W. C. (1991). Lobbying for social change. Haworth Press.

Dyfyniad Arddull Chicago

Richan, Willard C. Lobbying for Social Change. New York: Haworth Press, 1991.

Dyfyniad MLA

Richan, Willard C. Lobbying for Social Change. Haworth Press, 1991.

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