Dyfyniad APA

SCHIFFMAN STEPHAN. (2005). 25 SALES HABITS OF HIGHLY SUCCESSFUL SALESPEOPLE. ADAMS MEDIA CORPORATION.

Dyfyniad Arddull Chicago

SCHIFFMAN STEPHAN. 25 SALES HABITS OF HIGHLY SUCCESSFUL SALESPEOPLE. MASSACHUETTS: ADAMS MEDIA CORPORATION, 2005.

Dyfyniad MLA

SCHIFFMAN STEPHAN. 25 SALES HABITS OF HIGHLY SUCCESSFUL SALESPEOPLE. ADAMS MEDIA CORPORATION, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.