MLA

Harrel, Doris Leland. New Techniques In Twentieth-century Solo Piano Music: An Expansion of Pianistic Resources From Cowell to the Present. Ann Arbor, MI: UMI, 1976.

APA

Harrel, D. Leland. (1976). New Techniques in Twentieth-Century Solo Piano Music: An Expansion of Pianistic Resources from Cowell to the Present. Ann Arbor, MI: UMI.

Chicago

Harrel, Doris Leland New Techniques In Twentieth-Century Solo Piano Music: An Expansion of Pianistic Resources From Cowell to the Present. Ann Arbor, MI: UMI, 1976.