Cita APA (7a ed.)

Burton, P. W., & Purvis, S. C. (1991). Which ad pulled best? (6th ed.). NTC Business Books.

Cita Chicago Style (17a ed.)

Burton, Philip Ward, y Scott C. Purvis. Which Ad Pulled Best? 6th ed. Lincolnwood: NTC Business Books, 1991.

Cita MLA (9a ed.)

Burton, Philip Ward, y Scott C. Purvis. Which Ad Pulled Best? 6th ed. NTC Business Books, 1991.