Gaya APA
Simpson, D, M. (1996).
Weed Science Bol. 44 No 4 October - December 1996 .
Madison, Wisconsin, AS:
Weed Sciences Society Of America.
Gaya MLA
Simpson, David, M..
"Weed Science Bol. 44 No 4 October - December 1996".
Madison, Wisconsin, AS:
Weed Sciences Society Of America,
1996.
Text.