Παραπομπή APA

Kelley, E. J. (1972). Marketing planning and competitve strategy. Prentice Hall, Inc.

Παραπομπή Chicago Style

Kelley, Eugene J. Marketing Planning and Competitve Strategy. New Jersey: Prentice Hall, Inc, 1972.

Παραπομπή MLA

Kelley, Eugene J. Marketing Planning and Competitve Strategy. Prentice Hall, Inc, 1972.