Sterner, Judy; David, Nicholas (1991). "Gender and Caste in the Mandara Highlands: Northeastern Nigeria and Northern Cameroon". Ethnology. 30 (4). University of Pittsburgh Press: 355–369. doi:10.2307/3773690. JSTOR3773690.
Sterner, Judy; David, Nicholas (1991). "Gender and Caste in the Mandara Highlands: Northeastern Nigeria and Northern Cameroon". Ethnology. 30 (4). University of Pittsburgh Press: 355–369. doi:10.2307/3773690. JSTOR3773690.