APA ציטוט

Langer, S. K. (1953). An introduction to symbolic logic. New York: Dover Publications.

Trích dẫn kiểu Chicago

Langer, Susanne Katherina. An Introduction to Symbolic Logic. New York: Dover Publications, 1953.

ציטוט MLA

Langer, Susanne Katherina. An Introduction to Symbolic Logic. New York: Dover Publications, 1953.