The history of Yaballaha III: Nestorian patriarch and of his vicar Bar Sauma, Mongol ambassador to the Frankish courts at the end ot the thirteenth century /
translated from the Syriac and annotated by James A. Montgomery 
. - New York : Octagon Books, Inc.,  1966 
. - 82 p.  24 cm. 
 - (Records of civilization : sources and studies  ; no. 8 )
<br/><br/><label>Subjects--Personal Names: </label><br/>Yabhalāhā III  Patriarch of the Nestorians  1245-1317 <br/>Sâumā Rabban  -1293?