APA aipamena

Langland, W. (1968). The vision of William concerning Piers the Plowman. Oxford: The Clarendon Press.

Chicago Style aipamena

Langland, William. The Vision of William Concerning Piers the Plowman. Oxford: The Clarendon Press, 1968.

MLA aipamena

Langland, William. The Vision of William Concerning Piers the Plowman. Oxford: The Clarendon Press, 1968.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.