Citazione Stile APA (7a Edizione)

Hartog, H. (1961). European music in the twentieth century. Penguin Books.

Citazione stile Chigago Style (17a edizione)

Hartog, Howard. European Music in the Twentieth Century. Londres: Penguin Books, 1961.

Citatione MLA (9a ed.)

Hartog, Howard. European Music in the Twentieth Century. Penguin Books, 1961.