Cita APA (7th ed.)

Johnston, D. M. (1981). The environmental law of the sea. International Union for Conservation of Nature and Natural Resources.

Cita Chicago (17th ed.)

Johnston, Douglas M. The Environmental Law of the Sea. Lausana: International Union for Conservation of Nature and Natural Resources, 1981.

Cita MLA (9th ed.)

Johnston, Douglas M. The Environmental Law of the Sea. International Union for Conservation of Nature and Natural Resources, 1981.