Cita APA (7a ed.)

O'Shaughnessy, J. (1988). Competitive marketing, a strategic approach (2nd ed.). Unwin Hyman.

Cita Chicago Style (17a ed.)

O'Shaughnessy, John. Competitive Marketing, a Strategic Approach. 2nd ed. Boston [etc.]: Unwin Hyman, 1988.

Cita MLA (9a ed.)

O'Shaughnessy, John. Competitive Marketing, a Strategic Approach. 2nd ed. Unwin Hyman, 1988.