Crush, J.R., and J.R. Caradus. “Increasing Symbiotic Potentials in White Clover”. NZGA: Research and Practice Series 6 (January 1, 1996): 91–94. Accessed July 13, 2026. https://www.nzgajournal.org.nz/index.php/rps/article/view/3363.