APA-viite (7. p.)
Graham, I. (1967). Archaeological explorations in El Peten, Guatemala. Middle American Research Institute, Tulane University.
Chicago-viite (17. p.)
Graham, Ian. Archaeological Explorations in El Peten, Guatemala. New Orleans: Middle American Research Institute, Tulane University, 1967.
MLA-viite (9. p.)
Graham, Ian. Archaeological Explorations in El Peten, Guatemala. Middle American Research Institute, Tulane University, 1967.
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