Fallows 1999 David Fallows, A Catalogue of Polyphonic Songs 1415-1480 (New York, 1999) [with online supplement: http://personalpages.manchester.ac.uk/staff/david.fallows/appendix.pdf]. 146
Litterick 1976 Louise Litterick, 'The Manuscript Royal 20.A.XVI of the British Library' (Ph.D. diss., New York University, 1976).
