Merriam-Webster Guide to Punctuation & Style
Edition: 2nd ed. - 2008
The Langenscheidt Merriam-Webster Guide to Punctuation and Style is a reliable, detailed and up to date guide. Features include: 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; how to present numbers properly.