APA

,, . (1991). Proceedings of the thirty third colloquium on the law of outer space. New York: American Institute of Aeronautics and Astronatics.

Chicago

,, . 1991. Proceedings of the thirty third colloquium on the law of outer space. New York: American Institute of Aeronautics and Astronatics.

Harvard

,, . (1991). Proceedings of the thirty third colloquium on the law of outer space. New York: American Institute of Aeronautics and Astronatics.

MLA

,, . Proceedings of the thirty third colloquium on the law of outer space. New York: American Institute of Aeronautics and Astronatics. 1991.