APA Style

Proceedings of The Thirty-Ninth Colloquium on The Law of Outer Space : October 16-22 1993 Graz, Austria. (). Reston, VA: .

MLA Style

Proceedings of The Thirty-Ninth Colloquium on The Law of Outer Space : October 16-22 1993 Graz, Austria. . Reston, VA: , . Text.