Gaya APA

al.], J, L, L, [. (2010). Effect of Nitrogen Addition and Weed Interference on Soil Nitrogen and Corn Nitrogen Nutrition (24, January–March 2010). New York: Weed Science Society America.

Gaya MLA

al.], John, L., Lindquist, [et. "Effect of Nitrogen Addition and Weed Interference on Soil Nitrogen and Corn Nitrogen Nutrition". 24, January–March 2010 New York: Weed Science Society America, 2010. e-journal.