Cita APA (7th ed.)
Lewis, O., & Beltrán, A. (1964). Pedro Martínez: A mexican peasant and his family (First printing.). Random House.
Cita Chicago (17th ed.)
Lewis, Oscar, i Alberto Beltrán. Pedro Martínez: A Mexican Peasant and His Family. First printing. New York: Random House, 1964.
Cita MLA (9th ed.)
Lewis, Oscar, i Alberto Beltrán. Pedro Martínez: A Mexican Peasant and His Family. First printing. Random House, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.