APA (7th ed.) Citation

Singh, S. (1999). The Code Book. 4th Estate Ltd.

Chicago Style (17th ed.) Citation

Singh, Simon. The Code Book. London: 4th Estate Ltd, 1999.

MLA (9th ed.) Citation

Singh, Simon. The Code Book. 4th Estate Ltd, 1999.

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