APA (7th ed.) Citation
Higgins, P. M. (2008). Number story: From counting to cryptography. Copernicus Books.
Chicago Style (17th ed.) Citation
Higgins, Peter M. Number Story: From Counting to Cryptography. London: Copernicus Books, 2008.
MLA (9th ed.) Citation
Higgins, Peter M. Number Story: From Counting to Cryptography. Copernicus Books, 2008.
Warning: These citations may not always be 100% accurate.