U.S. Library of Congress. Legislative Reference Service & United States. Congress. Senate. Committee on Aeronautical and Space Sciences. (1961). Legal problems of space exploration: A symposium prepared for the use of the Committee on Aeronautical and Space Sciences, United States Senate. U. S. Govt. Print. Off.
Παραπομπή σε μορφή Chicago (17η εκδ.)U.S. Library of Congress. Legislative Reference Service και United States. Congress. Senate. Committee on Aeronautical and Space Sciences. Legal Problems of Space Exploration: A Symposium Prepared for the Use of the Committee on Aeronautical and Space Sciences, United States Senate. Washington: U. S. Govt. Print. Off, 1961.
Παραπομπή σε μορφή MLA (9th εκδ.)U.S. Library of Congress. Legislative Reference Service και United States. Congress. Senate. Committee on Aeronautical and Space Sciences. Legal Problems of Space Exploration: A Symposium Prepared for the Use of the Committee on Aeronautical and Space Sciences, United States Senate. U. S. Govt. Print. Off, 1961.