APA (7th ed.) Zitazioa
Drucker, P., Heizer, R. F., & Squier, R. J. (1959). Excavations at la Venta, Tabasco, 1955. Government Printing Office.
Chicago Style (17th ed.) Zitazioa
Drucker, Philip, Robert F. Heizer, eta Robert J. Squier. Excavations at La Venta, Tabasco, 1955. Washington: Government Printing Office, 1959.
MLA (9th ed.) Zitazioa
Drucker, Philip, et al. Excavations at La Venta, Tabasco, 1955. Government Printing Office, 1959.
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