Bolling, C. L. (1930). Retail Salesmanship: A Practical Guide to Modern Methods of Sales Persuasion Demonstration and service (2nd ed.). Isaac Pitman.
استشهاد بنمط شيكاغوBolling, Cunliffe L. Retail Salesmanship: A Practical Guide to Modern Methods of Sales Persuasion Demonstration and Service. 2nd ed. London: Isaac Pitman, 1930.
MLA استشهادBolling, Cunliffe L. Retail Salesmanship: A Practical Guide to Modern Methods of Sales Persuasion Demonstration and Service. 2nd ed. Isaac Pitman, 1930.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.