APA (7th ed.) Citation

Copeland, M. T. (1931). Problems in marketing (4th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Copeland, Melvin Thomas. Problems in Marketing. 4th ed. New York: McGraw-Hill, 1931.

MLA (9th ed.) Citation

Copeland, Melvin Thomas. Problems in Marketing. 4th ed. McGraw-Hill, 1931.