Schultz, D. E., Robinson, W. A., & Petrison, L. A. (1998). Sales promotion essentials: The 10 basic sales promotion techniques (3rd ed.). Lincolnwood, Ill.: NTC Business Books.
استشهاد بنمط شيكاغوSchultz, Don E., William A. Robinson, و Lisa A. Petrison. Sales Promotion Essentials: The 10 Basic Sales Promotion Techniques. 3rd ed. Lincolnwood, Ill.: NTC Business Books, 1998.
MLA استشهادSchultz, Don E., William A. Robinson, و Lisa A. Petrison. Sales Promotion Essentials: The 10 Basic Sales Promotion Techniques. 3rd ed. Lincolnwood, Ill.: NTC Business Books, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.