APA (7th ed.) Zitazioa

GRAVES, R. (1957). English and scottish ballads. Heinemann.

Chicago Style (17th ed.) Zitazioa

GRAVES, Robert. English and Scottish Ballads. London: Heinemann, 1957.

MLA (9th ed.) Zitazioa

GRAVES, Robert. English and Scottish Ballads. Heinemann, 1957.