Langer, S. K. K. n. 1., & Langer, S. K. K. n. 1. (1953). An Introduction to symbolic logic (2. edition rev.). New York, New York: Dover.
Chicago Style CitationLanger, Susanne Katherina Knauth n. 1895, and Susanne Katherina Knauth n. 1895 Langer. An Introduction to Symbolic Logic. 2. edition rev. New York, New York: Dover, 1953.
MLA CitationLanger, Susanne Katherina Knauth n. 1895, and Susanne Katherina Knauth n. 1895 Langer. An Introduction to Symbolic Logic. 2. edition rev. New York, New York: Dover, 1953.
Warning: These citations may not always be 100% accurate.