Gardner, M. (1971). Sixth book of mathematical games from Scientific American. W. H. Freeman.
Chicago Style (17th ed.) CitationGardner, Martin. Sixth Book of Mathematical Games from Scientific American. San Francisco: W. H. Freeman, 1971.
MLA (9th ed.) CitationGardner, Martin. Sixth Book of Mathematical Games from Scientific American. W. H. Freeman, 1971.
Warning: These citations may not always be 100% accurate.