Schumann, C., Schumann, R., Weissweiler, E., Fritsch, H., & Crawford, R. L. (1996). The complete correspondence of Clara and Robert Schumann (Critical ed.). Peter Lang.
芝加哥风格引文Schumann, Clara, Robert Schumann, Eva Weissweiler, Hildegard Fritsch, 与 Ronald L. Crawford. The Complete Correspondence of Clara and Robert Schumann. Critical ed. New York: Peter Lang, 1996.
MLA引文Schumann, Clara, et al. The Complete Correspondence of Clara and Robert Schumann. Critical ed. Peter Lang, 1996.
警告：这些引文格式不一定是100％准确.