Vergouwen, J. C. (1964). The social organisation and customary law of the Toba-Batak of Northern Sumatra. M. Nijhoff.
Citace podle Chicago (17th ed.)Vergouwen, Jacob Cornelis. The Social Organisation and Customary Law of the Toba-Batak of Northern Sumatra. The Hague: M. Nijhoff, 1964.
Citace podle MLA (9th ed.)Vergouwen, Jacob Cornelis. The Social Organisation and Customary Law of the Toba-Batak of Northern Sumatra. M. Nijhoff, 1964.
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