Barnum, Kimberly, and Steven J. Franks. “Seed Extracts Impede Germination in Brassica Rapa Plants”. International Journal of Plant Biology 4, no. 1 (September 10, 2013): e2. Accessed May 3, 2024. https://www.pagepress.org/journals/pb/article/view/pb.2013.e2.