Zilverberg, C., and V. G. Allen. “Repeated Grazing Affects Quality and Sampling Strategies of ’WW B. Dahl’ Old World Bluestem”. Texas Journal of Agriculture and Natural Resources, vol. 27, Dec. 2015, pp. 69-72, https://txjanr.agintexas.org/index.php/txjanr/article/view/27.