James, T.K., A. Rahman, and J. Mellsop. “Weed Competition in Maize Crop under Different Timings for Postemergence Weed Control”. New Zealand Plant Protection 53 (August 1, 2000): 269–272. Accessed June 9, 2023. https://journal.nzpps.org/index.php/nzpp/article/view/3706.