APA (7th ed.) Citation

Hartston, W. R. (1997). The book of numbers / William Hartston. Richard Cohen.

Chicago Style (17th ed.) Citation

Hartston, William R. The Book of Numbers / William Hartston. London: Richard Cohen, 1997.

MLA (9th ed.) Citation

Hartston, William R. The Book of Numbers / William Hartston. Richard Cohen, 1997.

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