APA (7th ed.) Zitazioa
Gallenkamp, C. Maya, the riddle and rediscovery of a lost civilization.
Chicago Style (17th ed.) Zitazioa
Gallenkamp, Charles. Maya, the Riddle and Rediscovery of a Lost Civilization.
MLA (9th ed.) Zitazioa
Gallenkamp, Charles. Maya, the Riddle and Rediscovery of a Lost Civilization.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.