APA (7th ed.) Citation

Roberts, M. L., & Berger, P. D. (1989). Direct marketing management. Prentice Hall.

Chicago Style (17th ed.) Citation

Roberts, Mary Lou, and Paul D. Berger. Direct Marketing Management. Englewood Cliffs: Prentice Hall, 1989.

MLA (9th ed.) Citation

Roberts, Mary Lou, and Paul D. Berger. Direct Marketing Management. Prentice Hall, 1989.