Krause, D. (1976). Sean O'Casey and his world. Thames and Hudson.
Chicago-Zitierstil (17. Ausg.)Krause, David. Sean O'Casey and His World. London: Thames and Hudson, 1976.
MLA-Zitierstil (8. Ausg.)Krause, David. Sean O'Casey and His World. Thames and Hudson, 1976.
警告：這些引文格式不一定是100％准確.