Cita APA (7th ed.)

Apel, W. (1947). Masters of the keyboard: A brief survey of pianoforte music. Harvard Univ. Press.

Cita Chicago (17th ed.)

Apel, Willi. Masters of the Keyboard: A Brief Survey of Pianoforte Music. Cambridge: Harvard Univ. Press, 1947.

Cita MLA (9th ed.)

Apel, Willi. Masters of the Keyboard: A Brief Survey of Pianoforte Music. Harvard Univ. Press, 1947.