Levitt, T. (1986). The Marketing imagination: New, expanded edition. The Free.
Chicago Style (17th ed.) ZitazioaLevitt, Theodore. The Marketing Imagination: New, Expanded Edition. New York: The Free, 1986.
MLA (9th ed.) ZitazioaLevitt, Theodore. The Marketing Imagination: New, Expanded Edition. The Free, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.