MLA

Humphries, Charles, and W. C Smith. Music Publishing In the British Isles: From the Beginning Until the Middle of the Nineteenth Century. A Dictionary of Engravers, Printers, Publishers and Music Sellers, with a Historical Introduction. 2nd ed., with Supplement Oxford: Blackwell, 1970.

APA

Humphries, C., & Smith, W. C. (1970). Music publishing in the British Isles: from the beginning until the middle of the nineteenth century. A Dictionary of engravers, printers, publishers and music sellers, with a historical introduction. 2nd ed., with Supplement Oxford: Blackwell.

Chicago

Humphries, Charles, and W. C Smith. Music Publishing In the British Isles: From the Beginning Until the Middle of the Nineteenth Century. A Dictionary of Engravers, Printers, Publishers and Music Sellers, with a Historical Introduction. 2nd ed., with Supplement Oxford: Blackwell, 1970.