Cita APA (7th ed.)
Graham, I. (1967). Archaeological explorations in El Peten, Guatemala. Middle American Research Institute, Tulane University.
Cita Chicago (17th ed.)
Graham, Ian. Archaeological Explorations in El Peten, Guatemala. New Orleans: Middle American Research Institute, Tulane University, 1967.
Cita MLA (9th ed.)
Graham, Ian. Archaeological Explorations in El Peten, Guatemala. Middle American Research Institute, Tulane University, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.