Merriam-Webster's Guide to Punctuation and Style

This practical guide gives you quick, easy-to-understand answers to the questions you face most often in your writing: How to punctuate a sentence; when to capitalize, italicize, or use quotation marks; how to form plurals, possessives, and compound words; when to use abbreviations; the right way to present numbers; how to handle common usage problems; and how to write footnotes, endnotes, and bibliographies.