Cita APA (7th ed.)
Clewlow, W. C. (1967). Colossal heads of the Olmec culture. University of California Archaeological Research Facility.
Cita Chicago (17th ed.)
Clewlow, William C. Colossal Heads of the Olmec Culture. Berkeley: University of California Archaeological Research Facility, 1967.
Cita MLA (9th ed.)
Clewlow, William C. Colossal Heads of the Olmec Culture. University of California Archaeological Research Facility, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.