Jacobs, S. (2013). Membership rules!: The art of selling what matters (First edition.). Jossey-Bass.
Citazione stile Chigago Style (17a edizione)Jacobs, Sheri. Membership Rules!: The Art of Selling What Matters. First edition. San Francisco, CA: Jossey-Bass, 2013.
Citatione MLA (9a ed.)Jacobs, Sheri. Membership Rules!: The Art of Selling What Matters. First edition. Jossey-Bass, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.