APA引文

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.

MLA引文

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

警告：這些引文格式不一定是100％准確.