Rowley, G. S., & Gable, F. K. (1973). An annotated catalog of rare musical items in the Libraries of the University of Iowa: Additions 1963-1972. University of Iowa.
Dyfyniad Arddull ChicagoRowley, Gordon S., and Frederick Kent Gable. An Annotated Catalog of Rare Musical Items in the Libraries of the University of Iowa: Additions 1963-1972. Iowa City: University of Iowa, 1973.
Dyfyniad MLARowley, Gordon S., and Frederick Kent Gable. An Annotated Catalog of Rare Musical Items in the Libraries of the University of Iowa: Additions 1963-1972. University of Iowa, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.