Cita APA (7a ed.)
Fritz, R. (2008). The power of a positive attitude: Discovering the key to success. American Management Association.
Cita Chicago Style (17a ed.)
Fritz, Roger. The Power of a Positive Attitude: Discovering the Key to Success. New York: American Management Association, 2008.
Cita MLA (9a ed.)
Fritz, Roger. The Power of a Positive Attitude: Discovering the Key to Success. American Management Association, 2008.
Precaución: Estas citas no son 100% exactas.