leo treitler, with voice and pen: coming to know medieval song and how it was made. oxford: oxford university press, 2003. xxx, 506 pp.; 9 pp. of plates; cd. isbn 0 19 816644 3
Plainsong & Medieval Music, 2005, Vol.14 (2), p.225-234 [Peer Reviewed Journal]2005 cambridge university press ;ISSN: 0961-1371 ;EISSN: 1474-0087 ;DOI: 10.1017/S0961137105220235
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