Cita APA (7th ed.)

Roberts, M. L., & Zahay, D. (2010). Internet marketing (2nd ed.). Cengage Learning.

Cita Chicago (17th ed.)

Roberts, Mary Lou, i Debra Zahay. Internet Marketing. 2nd ed. New Delhi: Cengage Learning, 2010.

Cita MLA (9th ed.)

Roberts, Mary Lou, i Debra Zahay. Internet Marketing. 2nd ed. Cengage Learning, 2010.