Nicholas, Sydney H. <br/><br/>
Principles and recommendations with notes and comments / 
S. H. Nicholas. 
 - 4th ed. 
 - Surrey :  The Royal School of Church Music,  1960 
 - 64 p. ;  22 cm. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Music--Religious aspects.