ebrary, Inc. (2006). Customer loyalty, retention, and customer relationship management. Emerald Group Publishing.
Цитирование в стиле Чикаго (17-е изд.)ebrary, Inc. Customer Loyalty, Retention, and Customer Relationship Management. Bradford, England: Emerald Group Publishing, 2006.
Цитирование MLA (9-е изд.)ebrary, Inc. Customer Loyalty, Retention, and Customer Relationship Management. Emerald Group Publishing, 2006.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.