Easton, H.S., and J.N. Couchman. “Ryegrass Endophyte and Cattle Growth in Northland”. NZGA: Research and Practice Series 7 (January 1, 1999): 57–62. Accessed September 14, 2026. https://www.nzgajournal.org.nz/index.php/rps/article/view/3397.