APA (7e ed.) Bronvermelding

Jacobs, S. (2013). Membership rules!: The art of selling what matters (First edition.). Jossey-Bass.

Chicago (17e ed.) Bronvermelding

Jacobs, Sheri. Membership Rules!: The Art of Selling What Matters. First edition. San Francisco, CA: Jossey-Bass, 2013.

MLA (9e ed.) Bronvermelding

Jacobs, Sheri. Membership Rules!: The Art of Selling What Matters. First edition. Jossey-Bass, 2013.