Παραπομπή APA

Helsen,, K. (2009). Sage handbook of international marketing. Sage.

Παραπομπή Chicago Style

Helsen,, Kristiaan. Sage Handbook of International Marketing. London: Sage, 2009.

Παραπομπή MLA

Helsen,, Kristiaan. Sage Handbook of International Marketing. Sage, 2009.