APA (7th ed.) Citation

Hartog, H. (1957). European music in the twentieth century. Routledge and K. Paul.

Chicago Style (17th ed.) Citation

Hartog, Howard. European Music in the Twentieth Century. London: Routledge and K. Paul, 1957.

MLA (8th ed.) Citation

Hartog, Howard. European Music in the Twentieth Century. Routledge and K. Paul, 1957.