Παραπομπή σε μορφή APA (7η εκδ.)

Timmers Paul. (1999). Electronic commerce: Strategies and models for business-to-business trading. Wiley, J.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Timmers Paul. Electronic Commerce: Strategies and Models for Business-to-business Trading. Wiley, J, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Timmers Paul. Electronic Commerce: Strategies and Models for Business-to-business Trading. Wiley, J, 1999.