APA (7th ed.) Citation

Gardner, M. (1996). The universe in a handkerchief: Lewis Carroll's mathematical recreations, games, puzzles, and word plays. Copernicus.

Chicago Style (17th ed.) Citation

Gardner, Martin. The Universe in a Handkerchief: Lewis Carroll's Mathematical Recreations, Games, Puzzles, and Word Plays. New York, NY: Copernicus, 1996.

MLA (9th ed.) Citation

Gardner, Martin. The Universe in a Handkerchief: Lewis Carroll's Mathematical Recreations, Games, Puzzles, and Word Plays. Copernicus, 1996.

Warning: These citations may not always be 100% accurate.