Gardner, M. (1971). Space puzzles: Curious questions and answers about the solar system. Illustr. with diagrams and photographs drawings by Ted Schroeder. Simon and Schuster.
Chicago-Zitierstil (17. Ausg.)Gardner, Martin. Space Puzzles: Curious Questions and Answers About the Solar System. Illustr. with Diagrams and Photographs Drawings by Ted Schroeder. New York: Simon and Schuster, 1971.
MLA-Zitierstil (9. Ausg.)Gardner, Martin. Space Puzzles: Curious Questions and Answers About the Solar System. Illustr. with Diagrams and Photographs Drawings by Ted Schroeder. Simon and Schuster, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.