Marshall, P. (2017). Ultimate Guide to Google AdWords: How to Access 100 Million People in 10 Minutes (5th ed.). Entrepreneur Press.
Chicago-Zitierstil (17. Ausg.)Marshall, Perry. Ultimate Guide to Google AdWords: How to Access 100 Million People in 10 Minutes. 5th ed. Irvine, CA: Entrepreneur Press, 2017.
MLA-Zitierstil (9. Ausg.)Marshall, Perry. Ultimate Guide to Google AdWords: How to Access 100 Million People in 10 Minutes. 5th ed. Entrepreneur Press, 2017.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.