Wellesz, E. (1947). Eastern elements in Western chant: Studies in the early history of ecclesiastical music (2nd printing.). Byzantine Institute.
Chicago-referens (17:e uppl.)Wellesz, Egon. Eastern Elements in Western Chant: Studies in the Early History of Ecclesiastical Music. 2nd printing. Oxford: Byzantine Institute, 1947.
MLA-referens (9:e uppl.)Wellesz, Egon. Eastern Elements in Western Chant: Studies in the Early History of Ecclesiastical Music. 2nd printing. Byzantine Institute, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.