Gott, V. (1977). This amazing, amazing, amazing but Knowledge universe: Knowledge universe. Progress Pub.
Chicago-viite (17. p.)Gott, V. This Amazing, Amazing, Amazing but Knowledge Universe: Knowledge Universe. Moscow: Progress Pub, 1977.
MLA-viite (9. p.)Gott, V. This Amazing, Amazing, Amazing but Knowledge Universe: Knowledge Universe. Progress Pub, 1977.
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