Цитирование APA (7-е изд.)
MarketingSherpa, Inc, & ebrary, Inc. (2003). Proven online subscription sales tactics: 31 case studies and 25 tactics to get more paid subscribers. MarketingSherpa, Inc..
Цитирование в стиле Чикаго (17-е изд.)
MarketingSherpa, Inc, и Inc ebrary. Proven Online Subscription Sales Tactics: 31 Case Studies and 25 Tactics to Get More Paid Subscribers. Portsmouth, R.I.: MarketingSherpa, Inc., 2003.
Цитирование MLA (9-е изд.)
MarketingSherpa, Inc, и Inc ebrary. Proven Online Subscription Sales Tactics: 31 Case Studies and 25 Tactics to Get More Paid Subscribers. MarketingSherpa, Inc., 2003.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.