International English usage
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Online access to a variety of Oxford dictionaries may be possible using your library card or ATHENS number or through a subscription.
Garner's Modern English Usage by Bryan Garner (hardback, Oxford University Press, 2016)
Garner's Modern American Usage has been renamed Garner's Modern English Usage. Coverage of global English in this guide has been expanded to more than 6,000 entries, essays, and citations.
The Chicago Manual of Style: The Essential Guide for Writers, Editors and Publishers (hardback, The University of Chicago Press, 17th edn, 2017)
Merriam-Webster's Collegiate Dictionary (hardback and ebook, Merriam Webster, 11th edn, 2004)
Canadian A to Z of Grammar, Spelling, and Punctuation edited by Katherine Barber (paperback, Oxford University Press, 2006)
This pocket-sized edition offers advice on more than 1,000 of the most common language errors when tackling Canadian English.
The standard guide for Australian English.
If you're interested in the complex relationship between US and UK English, this is the book for you.
MLA Handbook Ninth Edition (paperback and ebook, Modern Language Association of America, 2021)
The MLA also offer an online subscription for digital access to their style handbook and publish support articles.