APA (7th ed.) Citation

Williams, R. V., & Lloyd, A. (1959). The Penguin Book of English Folk Songs. Penguin Books.

Chicago Style (17th ed.) Citation

Williams, R. Vaughan, and A.L Lloyd. The Penguin Book of English Folk Songs. Penguin Books, 1959.

MLA (8th ed.) Citation

Williams, R. Vaughan, and A.L Lloyd. The Penguin Book of English Folk Songs. Penguin Books, 1959.

Warning: These citations may not always be 100% accurate.