Quinlan, Robert J., Isaya Rumas, Godfrey Naiskye, Marsha Quinlan, and Jonathan Yoder. “Searching for Symbolic Value of Cattle: Tropical Livestock Units, Market Price, and Cultural Value of Maasai Livestock”. Ethnobiology Letters 7, no. 1 (October 4, 2016): 76–86. Accessed February 4, 2023. https://ojs.ethnobiology.org/index.php/ebl/article/view/621.