APA (7th ed.) Citation

Powell, D. M. (1947). Edward Elgar: Memories of a variation (2nd ed.). Oxford U.P..

Chicago Style (17th ed.) Citation

Powell, Dora M. Edward Elgar: Memories of a Variation. 2nd ed. London: Oxford U.P., 1947.

MLA (8th ed.) Citation

Powell, Dora M. Edward Elgar: Memories of a Variation. 2nd ed. Oxford U.P., 1947.