Jacobs, S. (2014). The Art of Membership: How to Attract, Retain and Cement Member Loyalty. Wiley.
Chicago-Zitierstil (17. Ausg.)Jacobs, Sheri. The Art of Membership: How to Attract, Retain and Cement Member Loyalty. Somerset: Wiley, 2014.
MLA-Zitierstil (9. Ausg.)Jacobs, Sheri. The Art of Membership: How to Attract, Retain and Cement Member Loyalty. Wiley, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.