The castle of perseverance. Four morality plays.(1979).
Chicago-Zitierstil (17. Ausg.)"The Castle of Perseverance." Four Morality Plays.(1979) .
MLA-Zitierstil (8. Ausg.)"The Castle of Perseverance." Four Morality Plays.(1979), .
警告:這些引文格式不一定是100%准確.