La Trobe University - Library: Medieval Music Database - Annual cycle of feasts of liturgical chant, liturgical polyphony and secular music of the late middle ages.

Salve, sancta virgula; Salve sancta parens

anonymous troped chant

Oxford: Bodleian Library, Bodley 652, number 4/ i verso-2 (2/1) (Triplum and Tenor only).

ZIINO, Agostino. 'Testi religiosi medioevali in notazione mensurale', L'Ars nova italiana del Trecento IV: Certaldo 1975, 1978, p. 475.

LEFFERTS, Peter M. The Motet in England in the Fourteenth Century, Ann Arbor: UMI Research Press, 1986, pp. 108, 111, 284.