APA (7th ed.) Zitazioa
Clark, J. E., & Nelson, F. W. (1988). The lithic artifacts of La Libertad, Chiapas, Mexico: An economic perspective. New World Archaeological Foundation ; Brigham Young University.
Chicago Style (17th ed.) Zitazioa
Clark, John E., eta Fred W. Nelson. The Lithic Artifacts of La Libertad, Chiapas, Mexico: An Economic Perspective. Provo, Utah: New World Archaeological Foundation ; Brigham Young University, 1988.
MLA (9th ed.) Zitazioa
Clark, John E., eta Fred W. Nelson. The Lithic Artifacts of La Libertad, Chiapas, Mexico: An Economic Perspective. New World Archaeological Foundation ; Brigham Young University, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.