Lopez, M., & Pena, J. (2010). Extra lean: The fat-burning plan that changes the way you eat for life. New American Library.
Cita Chicago Style (17a ed.)Lopez, Mario, y Jimmy Pena. Extra Lean: The Fat-burning Plan That Changes the Way You Eat for Life. New York, N.Y.: New American Library, 2010.
Cita MLA (8a ed.)Lopez, Mario, y Jimmy Pena. Extra Lean: The Fat-burning Plan That Changes the Way You Eat for Life. New American Library, 2010.
Precaución: Estas citas no son 100% exactas.