Παραπομπή σε μορφή APA (7η εκδ.)

Weisman, E. (1990). Trade in services and imperfect competition: Application to international aviation. Kluwer Academic.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Weisman, Ethan. Trade in Services and Imperfect Competition: Application to International Aviation. Dordrecht : Boston: Kluwer Academic, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Weisman, Ethan. Trade in Services and Imperfect Competition: Application to International Aviation. Kluwer Academic, 1990.