Cita APA

 Parker, M. (2008).  Who said so?: The questions revolutionary businesses ask that make them successful.  John Wiley & Sons.

Chicago Style Citation

 Parker, Michael.  Who Said So?: The Questions Revolutionary Businesses Ask That Make Them Successful.  John Wiley & Sons, 2008.

Cita MLA

 Parker, Michael.  Who Said So?: The Questions Revolutionary Businesses Ask That Make Them Successful.  John Wiley & Sons, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.