APA (7th ed.) Citation

Wingate, I. B., Gillespie, K. R., & Addison, B. G. (1944). Know your merchandise. Harper & brothers.

Chicago Style (17th ed.) Citation

Wingate, Isabel Barnum, Karen R. Gillespie, and Betty G. Addison. Know Your Merchandise. New York, London: Harper & brothers, 1944.

MLA (9th ed.) Citation

Wingate, Isabel Barnum, et al. Know Your Merchandise. Harper & brothers, 1944.