Cita APA

Karl Bach. (1979). Selling is simple ... if you don't make it complicated. San Francisco, California: Advance Books.

Chicago Style Citation

Karl Bach. Selling Is Simple ... If You Don't Make It Complicated. San Francisco, California: Advance Books, 1979.

Cita MLA

Karl Bach. Selling Is Simple ... If You Don't Make It Complicated. San Francisco, California: Advance Books, 1979.

Atenció: Aquestes cites poden no estar 100% correctes.