Swartz, Marc J.
Anthropology : perspective on humanity / Marc J. Swartz, David K. Jordan.
Wiley, 1976
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Fried, Morton H.
The evolution of political society / Morton H. Fried
Random House, 1967
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Origins of the state : the anthropology of political evolution
edited by Ronald Cohen and Elman R. Service
Institute for the Study of Human Issues, 1978
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Schulte Nordholt, H.G.
The political system of the atoni of Timor
The Hague, 1971
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Political systems and the distribution of power
edited by Michael Banton
Tavistock Publications, 1972
 Buku Teks SO