APA (7th ed.) Citation

Birtwistle, C. (1978). The calculator puzzle book. Bell Pub. Co..

Chicago Style (17th ed.) Citation

Birtwistle, Claude. The Calculator Puzzle Book. New York: Bell Pub. Co., 1978.

MLA (8th ed.) Citation

Birtwistle, Claude. The Calculator Puzzle Book. Bell Pub. Co., 1978.

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