Davidson, George. <br/><br/>
How to punctuate / 
by George Davidson. 
 - London :  Penguin,  c2005. 
 - 291 p. : ;  22 cm. 
 - Penguin Writers' Guides. .
 - Penguin Writers' Guides. .
<br/><br/> Explains the different types of punctuation. 
<br/><br/><label>ISBN: </label>0141021594 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Punctuation.<br/>Punctuation.