Cita APA

Girvan, R. (1971). Beowulf and the seventh century: Language and content.

Citación estilo Chicago

Girvan, Ritchie. Beowulf and the Seventh Century: Language and Content. London, Methuen, 1971.

Cita MLA

Girvan, Ritchie. Beowulf and the Seventh Century: Language and Content. 1971.