Trask R.L. Learn to Punctuate

Penguin Group, 1997. — 157 p.The punctuation described here is the style which is currently the norm in Britain and the Commonwealth. Standard American usage differs in a few respects; in these cases, American usage is also described, but examples of specifically American punctuation are always marked as follows:
(A).
The book also covers a few topics which are not strictly aspects of punctuation, such as the proper use of capital letters, of contractions and abbreviations and of diacritics. The last chapter goes on to explain the proper way to handle titles, footnotes, references and bibliographies, and it also covers the punctuation of personal and business letters.