APA (7th ed.) Citation

Hardy, R. M. (1938). How to succeed in retail selling. Harper & brothers.

Chicago Style (17th ed.) Citation

Hardy, Ray Morton. How to Succeed in Retail Selling. New York And London: Harper & brothers, 1938.

MLA (9th ed.) Citation

Hardy, Ray Morton. How to Succeed in Retail Selling. Harper & brothers, 1938.