"Punctuation. A guide to information about punctuation marks and their use both grammatically and typographically" - a book written by Frederick William Hamilton, will help you understand the nuances of the correct use of punctuation marks. Don't know where to put a comma or period? Do they keep you in order with the flurry of sentences? Then this book is just what you need. It will help you master the art of punctuation both in written language and in typography. A great helper for everyone who appreciates the purity and brevity of speech.