APA (7th ed.) Citation

Robinson, O. P., Robinson, C. H., & Zeiss, G. H. (1942). Successful retail salesmanship: Helping customers buy. Prentice Hall.

Chicago Style (17th ed.) Citation

Robinson, O. Preston, Christine H. Robinson, and George H. Zeiss. Successful Retail Salesmanship: Helping Customers Buy. New York: Prentice Hall, 1942.

MLA (9th ed.) Citation

Robinson, O. Preston, et al. Successful Retail Salesmanship: Helping Customers Buy. Prentice Hall, 1942.