Nie, Z., I. Valentine, A. Mackay, D. Barker, and J. Hodgson. “Long-Term Effects of Pastoral Fallowing on the Distribution and Performance of White Clover (Trifolium Repens L.) in a Hill Country Pasture”. NZGA: Research and Practice Series, vol. 6, Jan. 1996, pp. 75-78, doi:10.33584/rps.6.1995.3381.