Craver, R. (2014). Retention Fundraising: The new art and science of keeping your donors for life. Emerson & Church, Publishers.
Chicago-Zitierstil (17. Ausg.)Craver, Roger. Retention Fundraising: The New Art and Science of Keeping Your Donors for Life. Medfield, MA: Emerson & Church, Publishers, 2014.
MLA-Zitierstil (9. Ausg.)Craver, Roger. Retention Fundraising: The New Art and Science of Keeping Your Donors for Life. Emerson & Church, Publishers, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.