MacDonald, J. Successful People Skills in a Week: A Teach Yourself Guide. McGraw-Hill.
Cita Chicago Style (17a ed.)MacDonald, John. Successful People Skills in a Week: A Teach Yourself Guide. McGraw-Hill.
Cita MLA (8a ed.)MacDonald, John. Successful People Skills in a Week: A Teach Yourself Guide. McGraw-Hill.
Precaución: Estas citas no son 100% exactas.