Gaya APA
Langland, W. (2001).
Piers plowman with sir gawain and the green knight, pearl, sir orfeo (anon) .
London:
The Millenium.
Gaya MLA
Langland, William.
"Piers plowman with sir gawain and the green knight, pearl, sir orfeo (anon)".
London:
The Millenium,
2001.
Printed Book.