Gott, V. (1977). This amazing, amazing, amazing but Knowledge universe: Knowledge universe. Progress Pub.
Cita Chicago (17th ed.)Gott, V. This Amazing, Amazing, Amazing but Knowledge Universe: Knowledge Universe. Moscow: Progress Pub, 1977.
Cita MLA (9th ed.)Gott, V. This Amazing, Amazing, Amazing but Knowledge Universe: Knowledge Universe. Progress Pub, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.