Debrett's correct from 

 - London  Futura  1989 
 - x, 423p 
<br/><br/><label>ISBN: </label>0708815006 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Great Britain - Manners and customs Human behavior - Etiquette
<br/><br/><label>Dewey Class. No.: </label>395.4  / DEB