Pilditch, J. (1961). The silent salesman: How to develop packing that sells. Business publications.
استشهاد بنمط شيكاغوPilditch, James. The Silent Salesman: How to Develop Packing That Sells. London: Business publications, 1961.
MLA استشهادPilditch, James. The Silent Salesman: How to Develop Packing That Sells. Business publications, 1961.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.