Gutman, D., & Heller, J. (2012). Roberto & me (Unabridged.). Recorded Books.
Cita Chicago Style (17a ed.)Gutman, Dan, y Johnny Heller. Roberto & Me. Unabridged. Prince Frederick: Recorded Books, 2012.
Cita MLA (8a ed.)Gutman, Dan, y Johnny Heller. Roberto & Me. Unabridged. Recorded Books, 2012.
Precaución: Estas citas no son 100% exactas.