Westrup, J. A. (1954). History of music in sound, vol. 5: Opera and church music. RCA Victor LM6030.
Cita Chicago (17th ed.)Westrup, Jack Allan. History of Music in Sound, Vol. 5: Opera and Church Music. s.l: RCA Victor LM6030, 1954.
Cita MLA (9th ed.)Westrup, Jack Allan. History of Music in Sound, Vol. 5: Opera and Church Music. RCA Victor LM6030, 1954.
Atenció: Aquestes cites poden no estar 100% correctes.