Fujioka, Y., Ishimoto, Y. & Tsuruta, T., 7月 20 2020, Rethinking African Agriculture: How Non-Agrarian Factors Shape Peasant Livelihoods.Taylor and Francis Inc., p. 79-9416 p.
Loring Brace, C., Seguchi, N., Russell Nelson, A., Qifeng, P., Umeda, H., Wilson, M. & Brace, M. L., 1月 1 2014, Kennewick Man: The Scientific Investigation of an Ancient American Skeleton.Texas A and M University, p. 463-4719 p.