APA (7th ed.) Citation

Spiess, L. B. Polyphony in theory and practice from the ninth century to the close of the thirteenth century. Harvard. Univ.

Chicago Style (17th ed.) Citation

Spiess, Lincoln Bunce. Polyphony in Theory and Practice from the Ninth Century to the Close of the Thirteenth Century. Cambridge/Mass: Harvard. Univ.

MLA (9th ed.) Citation

Spiess, Lincoln Bunce. Polyphony in Theory and Practice from the Ninth Century to the Close of the Thirteenth Century. Harvard. Univ.