Dyfyniad APA

Engel, J. F., Warshaw, M. R., & Kinnear, T. C. (1979). Promotional strategy: Managing the marketing communications process (Fourth edition.). Richard D. Irwin, Inc.

Dyfyniad Arddull Chicago

Engel, James F., Martin R. Warshaw, and Thomas C. Kinnear. Promotional Strategy: Managing the Marketing Communications Process. Fourth edition. Homewood, Ill: Richard D. Irwin, Inc, 1979.

Dyfyniad MLA

Engel, James F., et al. Promotional Strategy: Managing the Marketing Communications Process. Fourth edition. Richard D. Irwin, Inc, 1979.

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