Dictionaries and Thesauruses
Davidson G, editor. Roget's thesaurus of English words and phrases. Penguin; 2004.
Maxwell C. Dictionary of perfect spelling. 2nd ed. Barrington Stoke; 2005.
New Oxford dictionary for writers and editors. 2nd ed.
The essential A-Z guide to the written word. Oxford University Press; 2005.
Shorter Oxford English dictionary. 6th ed. Oxford University Press; 2007. Sinclair J, editor.
Collins cobuild English language dictionary. 2nd ed. HarperCollins; 1995.
The Chambers dictionary. 11th ed. Chambers; 2008.
The Collins dictionary and thesaurus in one volume. 3rd ed. Collins; 2004.