Thematic Index An Index of Gregorian Chant, nr. Volume II Editat de John R. Bryden et al. 5 feb 1969 Hardback Preț: 524.85 lei 3-5 săpt.
Instrumental Music Isham Library Papers, 9 Editat de David G. Hughes 13 apr 2014 Hardback Preț: 493.67 lei 3-5 săpt.
Alphabetical Index An Index of Gregorian Chant, nr. Volume I Editat de John R. Bryden et al. 5 feb 1969 Hardback Preț: 536.49 lei 3-5 săpt.