APA (7th ed.) Citation

Engel, J. F., Warshaw, M. R., & Kinnear, T. C. (1991). Promotional strategy: Managing the marketing communications process (7th ed.). Irwin.

Chicago Style (17th ed.) Citation

Engel, James F., Martin R. Warshaw, and Thomas C. Kinnear. Promotional Strategy: Managing the Marketing Communications Process. 7th ed. Homewood, IL: Irwin, 1991.

MLA (9th ed.) Citation

Engel, James F., et al. Promotional Strategy: Managing the Marketing Communications Process. 7th ed. Irwin, 1991.