APA (7th ed.) Citation
Soanes, C., & Ferguson, S. (2009). Oxford a-z of spelling. Oxford University Press.
Chicago Style (17th ed.) Citation
Soanes, Catherina, and Sheila Ferguson. Oxford A-z of Spelling. New Delhi: Oxford University Press, 2009.
MLA (9th ed.) Citation
Soanes, Catherina, and Sheila Ferguson. Oxford A-z of Spelling. Oxford University Press, 2009.
Warning: These citations may not always be 100% accurate.