Brecht, B. (1972). Bertolt Brecht collected plays. Vintage Books.
芝加哥风格引文Brecht, Bertolt. Bertolt Brecht Collected Plays. New York: Vintage Books, 1972.
MLA引文Brecht, Bertolt. Bertolt Brecht Collected Plays. Vintage Books, 1972.
警告：这些引文格式不一定是100％准确.