Henry Rosenfeld (1965). "The social composition of the military in the process of state formation in the Arabian Desert". The Journal of the Royal Anthropological Institute of Great Britain and Ireland. 95 (2): 175. doi:10.2307/2844424. JSTOR2844424.
Henry Rosenfeld (1965). "The social composition of the military in the process of state formation in the Arabian Desert". The Journal of the Royal Anthropological Institute of Great Britain and Ireland. 95 (2): 175. doi:10.2307/2844424. JSTOR2844424.