Citace podle APA (7th ed.)
Ekholm, S. M. (1969). Mound 30a and the Early Preclassic Ceramic Sequence of Izapa, Chiapas, Mexico. Brigham Young University, New World Archaeological Foundation.
Citace podle Chicago (17th ed.)
Ekholm, Susanna M. Mound 30a and the Early Preclassic Ceramic Sequence of Izapa, Chiapas, Mexico. Provo, EUA: Brigham Young University, New World Archaeological Foundation, 1969.
Citace podle MLA (9th ed.)
Ekholm, Susanna M. Mound 30a and the Early Preclassic Ceramic Sequence of Izapa, Chiapas, Mexico. Brigham Young University, New World Archaeological Foundation, 1969.
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