APA (7th ed.) Citation

Goldmann, H. (1973). How to win customers. Hawthorn Books.

Chicago Style (17th ed.) Citation

Goldmann, Heinz. How to Win Customers. New York: Hawthorn Books, 1973.

MLA (9th ed.) Citation

Goldmann, Heinz. How to Win Customers. Hawthorn Books, 1973.