Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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