Citace podle APA

Asimov, I. (1989). Frontiers: New discoveries about man and his planet, outer space, and the universe. Truman Talley Books/Plume.

Styl Chicago

Asimov, Isaac. Frontiers: New Discoveries About Man and His Planet, Outer Space, and the Universe. New York: Truman Talley Books/Plume, 1989.

Citace podle MLA

Asimov, Isaac. Frontiers: New Discoveries About Man and His Planet, Outer Space, and the Universe. Truman Talley Books/Plume, 1989.

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