Παραπομπή σε μορφή APA (7η εκδ.)

Hewison, G., Van Dyke, J. M., & Zaelke, D. (1993). Freedom for the seas in the 21st century: Ocean governance and environmental harmony. Island Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hewison, Grant, Jon M. Van Dyke, και Durwood Zaelke. Freedom for the Seas in the 21st Century: Ocean Governance and Environmental Harmony. Washington, D.C: Island Press, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Hewison, Grant, et al. Freedom for the Seas in the 21st Century: Ocean Governance and Environmental Harmony. Island Press, 1993.