Gronroos, C. (2001). Services management and marketing: A customer relationship management approach (2nd edition.). John Wiley and Sons Limited.
Цитирование в стиле Чикаго (17-е изд.)Gronroos, Christian. Services Management and Marketing: A Customer Relationship Management Approach. 2nd edition. New York: John Wiley and Sons Limited, 2001.
Цитирование MLA (9-е изд.)Gronroos, Christian. Services Management and Marketing: A Customer Relationship Management Approach. 2nd edition. John Wiley and Sons Limited, 2001.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.