Cita APA (7a ed.)
MarketingSherpa, Inc, & ebrary, Inc. (2003). Proven online subscription sales tactics: 31 case studies and 25 tactics to get more paid subscribers. MarketingSherpa, Inc..
Cita Chicago Style (17a ed.)
MarketingSherpa, Inc, y Inc ebrary. Proven Online Subscription Sales Tactics: 31 Case Studies and 25 Tactics to Get More Paid Subscribers. Portsmouth, R.I.: MarketingSherpa, Inc., 2003.
Cita MLA (9a ed.)
MarketingSherpa, Inc, y Inc ebrary. Proven Online Subscription Sales Tactics: 31 Case Studies and 25 Tactics to Get More Paid Subscribers. MarketingSherpa, Inc., 2003.
Precaución: Estas citas no son 100% exactas.