Gaya APA

Ward, S, M. et al (2013). Palmer Amaranth (Amaranthus palmeri): A Review (27, January–March 2013). New York: Weed Science Society America.

Gaya MLA

Ward, Sarah, M.. et al. "Palmer Amaranth (Amaranthus palmeri): A Review". 27, January–March 2013 New York: Weed Science Society America, 2013. e-journal.