APA (7th ed.) Citation

Friedman, A. B. (1977). The Penguin book of folk ballads of the English-speaking world. Penguin Books.

Chicago Style (17th ed.) Citation

Friedman, Albert B. The Penguin Book of Folk Ballads of the English-speaking World. New York: Penguin Books, 1977.

MLA (9th ed.) Citation

Friedman, Albert B. The Penguin Book of Folk Ballads of the English-speaking World. Penguin Books, 1977.