Gaya APA

Koo, S, J. (1994). Weed Science Vol. 42 No. 1 January - March 1994 (Vol. 42 No. 1). Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Koo, Suk., J.. "Weed Science Vol. 42 No. 1 January - March 1994". Vol. 42 No. 1 Madison, Wisconsin, AS: Weed Sciences Society Of America, 1994. Text.