APA-viite (7. p.)
Ekholm-Miller, S. (1969). Mound 30a and the early preclassic ceramic sequence of Izapa, Chiapas, Mexico. New World Archaeological Foundation.
Chicago-viite (17. p.)
Ekholm-Miller, Susanna. Mound 30a and the Early Preclassic Ceramic Sequence of Izapa, Chiapas, Mexico. Provo, Utah: New World Archaeological Foundation, 1969.
MLA-viite (9. p.)
Ekholm-Miller, Susanna. Mound 30a and the Early Preclassic Ceramic Sequence of Izapa, Chiapas, Mexico. New World Archaeological Foundation, 1969.
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