United Nations Conference on the Exploration and Peaceful Uses of Outer Space. (1969). Practical benefits of space exploration: A digest of papers presented at the United Nations Conference on the Exploration and Peaceful Uses of Outer Space, Vienna, 1968. New York: United Nations.
Styl cytowania ChicagoUnited Nations Conference on the Exploration and Peaceful Uses of Outer Space. Practical Benefits of Space Exploration: A Digest of Papers Presented At the United Nations Conference On the Exploration and Peaceful Uses of Outer Space, Vienna, 1968. New York: United Nations, 1969.
Styl cytowania MLAUnited Nations Conference on the Exploration and Peaceful Uses of Outer Space. Practical Benefits of Space Exploration: A Digest of Papers Presented At the United Nations Conference On the Exploration and Peaceful Uses of Outer Space, Vienna, 1968. New York: United Nations, 1969.