Friedrich, W. (1969). Zehntausend) 10 000 Worter: A German vocabulary for students. Hueber.
芝加哥风格引文Friedrich, Wolf-Hartmut. Zehntausend) 10 000 Worter: A German Vocabulary for Students. Munchen: Hueber, 1969.
MLA引文Friedrich, Wolf-Hartmut. Zehntausend) 10 000 Worter: A German Vocabulary for Students. Hueber, 1969.
警告：这些引文格式不一定是100％准确.