Παραπομπή σε μορφή APA (7η εκδ.)

Marshall, P. S., & Todd, B. (2007). Ultimate guide to Google adwords: How to access 100 million people in 10 minutes. Entrepreneur Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Marshall, Perry S., και Bryan Todd. Ultimate Guide to Google Adwords: How to Access 100 Million People in 10 Minutes. [Irvine, Calif.]: Entrepreneur Press, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Marshall, Perry S., και Bryan Todd. Ultimate Guide to Google Adwords: How to Access 100 Million People in 10 Minutes. Entrepreneur Press, 2007.