Douglas, Conrad Edward Mary, and Thomas Herman Keahey (eds.) 1982-85. Johannes Prioris: Opera Omnia. Corpus mensurabilis musicae.  Neuhausen nr. Stuttgart: American Institute of Musicology.

Douglas, Conrad Edward Mary. 1969. The motets of Johannes Prioris with a prefatory bio-bibliographical study. Ph.D. Dissertation, University of Illinois.