Παραπομπή σε μορφή APA (7η εκδ.)

Cowhey, P. F., & Richards, J. E. (2002). Deregulating and Liberalizing the North-American Telecommunications Market: Explaining the US-Approach.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cowhey, Peter F., και John E. Richards. Deregulating and Liberalizing the North-American Telecommunications Market: Explaining the US-Approach. Hamburg, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

Cowhey, Peter F., και John E. Richards. Deregulating and Liberalizing the North-American Telecommunications Market: Explaining the US-Approach. 2002.