Cita APA

Bryden, J. R. 1., & Hughes, D. G. 1. (1969). An index of Gregorian chant. Cambridge, Massachusetts: Harvard University Press.

Citación estilo Chicago

Bryden, John Rennie 1913-2001, y David Grattan 1926-2015 Hughes. An Index of Gregorian Chant. Cambridge, Massachusetts: Harvard University Press, 1969.

Cita MLA

Bryden, John Rennie 1913-2001, y David Grattan 1926-2015 Hughes. An Index of Gregorian Chant. Cambridge, Massachusetts: Harvard University Press, 1969.