APA
Gardner M., . (1961). Mathematical Puzzles and Diversions. London: G. Bell and Sons Ltd.
Chicago
Gardner Martin, . 1961. Mathematical Puzzles and Diversions. London: G. Bell and Sons Ltd.
Harvard
Gardner M., . (1961). Mathematical Puzzles and Diversions. London: G. Bell and Sons Ltd.
MLA
Gardner Martin, . Mathematical Puzzles and Diversions. London: G. Bell and Sons Ltd. 1961.