APA

American Society of International Law, . (1981). Proceedings of the annual meeting. Washington: American Society of International Law.

Chicago

American Society of International Law, . 1981. Proceedings of the annual meeting. Washington: American Society of International Law.

Harvard

American Society of International Law, . (1981). Proceedings of the annual meeting. Washington: American Society of International Law.

MLA

American Society of International Law, . Proceedings of the annual meeting. Washington: American Society of International Law. 1981.