Mccloy, B.L., and S.R. White. “The Key to Successful Second Year White Clover Seed Crops”. NZGA: Research and Practice Series 6 (January 1, 1996): 40–40. Accessed August 8, 2026. https://www.nzgajournal.org.nz/index.php/rps/article/view/3382.