APA Style

Proceedings of The Thirty-Ninth Colloquium on The Law of Outer Space : October 11-15 1989 Torremolinos- Malaga- Spain. (). Reston, VA: .

MLA Style

Proceedings of The Thirty-Ninth Colloquium on The Law of Outer Space : October 11-15 1989 Torremolinos- Malaga- Spain. . Reston, VA: , . Text.