APA

Soanes C., Ferguson S., . (2004). Oxford A-Z of spelling. New York: Oxford University Press.

Chicago

Soanes Catherine, Ferguson Sheila, . 2004. Oxford A-Z of spelling. New York: Oxford University Press.

Harvard

Soanes C., Ferguson S., . (2004). Oxford A-Z of spelling. New York: Oxford University Press.

MLA

Soanes Catherine, Ferguson Sheila, . Oxford A-Z of spelling. New York: Oxford University Press. 2004.