Cita APA (7th ed.)

Pride, W. M., & Ferrell, O. C. (1991). Marketing: Concepts and strategies (7th ed.). Houghton Mifflin Co..

Cita Chicago (17th ed.)

Pride, William M., i O. C. Ferrell. Marketing: Concepts and Strategies. 7th ed. Boston, Mass.: Houghton Mifflin Co., 1991.

Cita MLA (9th ed.)

Pride, William M., i O. C. Ferrell. Marketing: Concepts and Strategies. 7th ed. Houghton Mifflin Co., 1991.