O'Hair, Dan.
A speaker’s guidebook: text and reference /
Dan O’Hair, Rob Stewart, Hannah Rubenstein 
. - 3rd edition 
. - Boston : Bedford/St. Martins,  2007 
. - xl, 552 p.  ill.  24 cm. 
<br/>К.: Бібліогр. : c. 523-535, Index 
<br/><label>  ISBN: </label>13: 978-0-312-44318-4 10: 0-312-44318-8