Gaya APA

LANGLAND, W., TILLER, T, [. (2001). Piers plowman with sir Gamain and the Green Knight, Pearl and Sir Orfeo (anon) . London: Everyman Publishers.

Gaya MLA

LANGLAND, William., TILLER, Terence, [penerj.]. "Piers plowman with sir Gamain and the Green Knight, Pearl and Sir Orfeo (anon)". London: Everyman Publishers, 2001. Buku.