Gaya APA

Popovich, K., Chen, I, J. (2003). Understanding customer relationship management (CRM) (Vol. 9 No. 5, 2003). USA: Emerald.

Gaya MLA

Popovich, Karen., Chen, Injazz, J.. "Understanding customer relationship management (CRM)". Vol. 9 No. 5, 2003 USA: Emerald, 2003. Article.