MLA

Mozart, Wolfgang Amadeus, et al. Complete Works for Two Pianos. UK: Turnabout, 1967.

APA

Mozart, W. Amadeus, Brendel, A., Klien, W., & Angerer, P. (1967). Complete Works for Two Pianos. UK: Turnabout.

Chicago

Mozart, Wolfgang Amadeus, Alfred Brendel, Walter Klien, and Paul Angerer. Complete Works for Two Pianos. UK: Turnabout, 1967.