APA (7th ed.) Zitazioa
Spores, R. (1974). Stratigraphic excavations in the Nochixtlán Valley, Oaxaca. Vanderbilt University.
Chicago Style (17th ed.) Zitazioa
Spores, Ronald. Stratigraphic Excavations in the Nochixtlán Valley, Oaxaca. Nashville, Tennessee: Vanderbilt University, 1974.
MLA (9th ed.) Zitazioa
Spores, Ronald. Stratigraphic Excavations in the Nochixtlán Valley, Oaxaca. Vanderbilt University, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.