Ritchie, J. M. (1972). Gottfried Benn: The unreconstructed expressionist. Wolff.
芝加哥风格引文Ritchie, J. M. Gottfried Benn: The Unreconstructed Expressionist. London: Wolff, 1972.
MLA引文Ritchie, J. M. Gottfried Benn: The Unreconstructed Expressionist. Wolff, 1972.
警告：这些引文格式不一定是100％准确.