Tohutoro APA (7th ed.)
Giesey, R. E. (1968). If not, not: The oath of the Aragonese and the legendary laws of Sobrarbe. Princeton University Press.
Tohutoru Kātū Chicago (17th ed.)
Giesey, Ralph E. If Not, Not: The Oath of the Aragonese and the Legendary Laws of Sobrarbe. Princeton, New Jersey: Princeton University Press, 1968.
Tohutoro MLA (9th ed.)
Giesey, Ralph E. If Not, Not: The Oath of the Aragonese and the Legendary Laws of Sobrarbe. Princeton University Press, 1968.
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