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The 5 Books I Keep Next to Me as a Writer
By an Amazon.com customer
Merriam-Webster's Dictionary of English UsageMerriam-Webster's Dictionary of English Usage by Merriam-Webster
Buy new: $18.45 / Used from: $12.25
The best book on English usage out there. I can't live (or rather, write) without it. Provides an excellent historical perspective and gives you the bottom line on proper usage.
Merriam-Webster's Collegiate Dictionary, 11th Edition (Red Kivar Binding with Jacket)Merriam-Webster's Collegiate Dictionary, 11th Edition (Red Kivar Binding with Jacket) by Merriam-Webster
Buy new: $16.29 / Used from: $6.96
Any basic dictionary will suffice. The real key is that you are quick to turn to it when unsure of a word's meaning.
Merriam Webster's Dictionary of Synonyms: A Dictionary of Discriminated Synonyms With Antonyms and Analogous and Contrasted WordsMerriam Webster's Dictionary of Synonyms: A Dictionary of Discriminated Synonyms With Antonyms and Analogous and Contrasted Words
Buy new: $15.61 / Used from: $7.16
A good thesauraus is a must-have companion. This one also provides analagous words, helping you to find that alternative meaning that is often just beyond the tip of your tongue.
The New Fowler's Modern English Usage (New Fowler's Modern English Usage, 3rd Ed)The New Fowler's Modern English Usage (New Fowler's Modern English Usage, 3rd Ed) by H. W. Fowler
Buy used from: $3.03
A classic, superb guide to the proper use of words and English. Offers a slightly more British perspective than #1 above, but it's an excellent resource.
The Chicago Manual of StyleThe Chicago Manual of Style
Buy new: $34.65 / Used from: $24.94
Basic necessity for professional citation, formating, and organization of research.