Παραπομπή σε μορφή APA (7η εκδ.)

Ostreng, W. (1999). National securiry and international environmental cooperation in the Arctic: The case of the Northern Sea Route. Kluwer Academic Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ostreng, Willy. National Securiry and International Environmental Cooperation in the Arctic: The Case of the Northern Sea Route. Dordrecht: Kluwer Academic Publishers, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ostreng, Willy. National Securiry and International Environmental Cooperation in the Arctic: The Case of the Northern Sea Route. Kluwer Academic Publishers, 1999.