APA (7th ed.) Citation

Brooke, M. (1963). A hundred and fifty puzzles in crypt-arithmetic. Dover Publ.

Chicago Style (17th ed.) Citation

Brooke, Maxey. A Hundred and Fifty Puzzles in Crypt-arithmetic. New York, NY: Dover Publ, 1963.

MLA (9th ed.) Citation

Brooke, Maxey. A Hundred and Fifty Puzzles in Crypt-arithmetic. Dover Publ, 1963.