Spinden, H. J. (1943). Ancient civilizations of Mexico and Central America (3a. ed.). American Museum of Natural History.
Chicago-čujuhus (17. p.)Spinden, Herbert J. Ancient Civilizations of Mexico and Central America. 3a. ed. Nueva York: American Museum of Natural History, 1943.
MLA-čujuhus (9. p.)Spinden, Herbert J. Ancient Civilizations of Mexico and Central America. 3a. ed. American Museum of Natural History, 1943.
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