Murphy, M. (2010). Hard Goals: The Secret to Getting from Where You Are to Where You Want to Be (Audio Book) (1st edition.). McGraw-Hill.
Cita Chicago Style (17a ed.)Murphy, Mark. Hard Goals: The Secret to Getting from Where You Are to Where You Want to Be (Audio Book). 1st edition. McGraw-Hill, 2010.
Cita MLA (9a ed.)Murphy, Mark. Hard Goals: The Secret to Getting from Where You Are to Where You Want to Be (Audio Book). 1st edition. McGraw-Hill, 2010.
Precaución: Estas citas no son 100% exactas.