Παραπομπή APA

Phelps, D., & Howsad westing J. (1960). Marketing management. Richard Irwin Inc.

Παραπομπή Chicago Style

Phelps, D.M, και Howsad westing J. Marketing Management. Homewood: Richard Irwin Inc, 1960.

Παραπομπή MLA

Phelps, D.M, και Howsad westing J. Marketing Management. Richard Irwin Inc, 1960.