Cita APA (7th ed.)
Andrews, E. W., IV, & Stuart, G. E. (1968). The Ruins of Ikil, Yucatan, Mexico. National Geographic Society : Tulane University.
Cita Chicago (17th ed.)
Andrews, E. Wyllys, IV, i George E. Stuart. The Ruins of Ikil, Yucatan, Mexico. Nueva Orleans, EUA: National Geographic Society : Tulane University, 1968.
Cita MLA (9th ed.)
Andrews, E. Wyllys, IV, i George E. Stuart. The Ruins of Ikil, Yucatan, Mexico. National Geographic Society : Tulane University, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.