Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.