Vogel, Cyrille.
Medieval liturgy: an introduction to the sources /
Cyrille Vogel ; revised and translated by William G. Storey, Niels Krogh Rasmussen ; with the assistance of John K. Brooks-Leonard 
. - Washington : Pastoral Press,  1986 
. - xix, 443 p.  tab.  23 cm. 
 - (NPM studies in church music and liturgy )
<br/>К.: Бібліогр. : c. 411-416, Index 
<br/><label>  ISBN: </label>0-912405-10-4