Hewison, G., Van Dyke, J. M., & Zaelke, D. (1993). Freedom for the seas in the 21st century: Ocean governance and environmental harmony. Island Press.
Chicago-referens (17:e uppl.)Hewison, Grant, Jon M. Van Dyke, och Durwood Zaelke. Freedom for the Seas in the 21st Century: Ocean Governance and Environmental Harmony. Washington, D.C: Island Press, 1993.
MLA-referens (9:e uppl.)Hewison, Grant, et al. Freedom for the Seas in the 21st Century: Ocean Governance and Environmental Harmony. Island Press, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.