APA aipamena

Bolling, C. (1930). Retail Salesmanship (2nd.). Isaman Pitman.

Chicago Style aipamena

Bolling, C. Retail Salesmanship. 2nd. London: Isaman Pitman, 1930.

MLA aipamena

Bolling, C. Retail Salesmanship. 2nd. Isaman Pitman, 1930.