The Summa musice : a thirteenth century manual for singers 
edited, with translation and introduction [by] Christopher Page 
 - Cambridge  Cambridge University Press  1991 
 - xvii, 275 p. : ill. ; 24 cm. 
<br/><br/> Formerly misattributed to Johannes de Muris. Includes bibliographical references (p. 237-243) and index 
<br/><br/><label>ISBN: </label>9780521404204 
<br/><br/><label>ISSN: </label>91008948 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gregorian chants - Instruction and study - Early works to 1800<br/>Music theory - Early works to 1800<br/>Singing - Instruction and study - Early works to 1800
<br/><br/><label>Dewey Class. No.: </label>782.3222 SUS