APA-viite (7. p.)
(1967). Studies in Olmec archaeology. University of California Archaeological Research Facility.
Chicago-viite (17. p.)
Studies in Olmec Archaeology. Berkeley: University of California Archaeological Research Facility, 1967.
MLA-viite (9. p.)
Studies in Olmec Archaeology. University of California Archaeological Research Facility, 1967.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.