Gaya APA
Fedtke, C. (1988).
Weed Socience Vol. 36 No. 5 September 1988 .
Madison, Wisconsin, AS:
Weed science Society of america.
Gaya MLA
Fedtke, Carl.
"Weed Socience Vol. 36 No. 5 September 1988".
Madison, Wisconsin, AS:
Weed science Society of america,
1988.
Text.