APA (7 वां संस्करण) प्रशस्ति पत्र

Garretson, R. L. (1993). Choral music: History, style, and performance practice. Prentice-Hall.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Garretson, Robert L. Choral Music: History, Style, and Performance Practice. Englewood Cliffs, N.J: Prentice-Hall, 1993.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Garretson, Robert L. Choral Music: History, Style, and Performance Practice. Prentice-Hall, 1993.