Cita APA (7th ed.)
Mayer, K. H. (1977). The mushroom stones of Mesoamerica. Acoma Books.
Cita Chicago (17th ed.)
Mayer, Karl Herbert. The Mushroom Stones of Mesoamerica. California: Acoma Books, 1977.
Cita MLA (9th ed.)
Mayer, Karl Herbert. The Mushroom Stones of Mesoamerica. Acoma Books, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.