Brunstetter, D. R.; Zartner, D. (2011). "Just War against Barbarians: Revisiting the Valladolid Debate between Sepulveda and Las Casas". Political Studies. 59 (3): 733–752. doi:10.1111/j.1467-9248.2010.00857.x. S2CID145672459.
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Brunstetter, D. R.; Zartner, D. (2011). "Just War against Barbarians: Revisiting the Valladolid Debate between Sepulveda and Las Casas". Political Studies. 59 (3): 733–752. doi:10.1111/j.1467-9248.2010.00857.x. S2CID145672459.