An Introduction to Symbolic Logic

MLA

Langer, Susanne K. An Introduction to Symbolic Logic. 2nd ed. (rev.) New York: Dover, 1953.

APA

Langer, S. K. (1953). An Introduction to Symbolic Logic. 2nd ed. (rev.) New York: Dover.

Chicago

Langer, Susanne K. An Introduction to Symbolic Logic. 2nd ed. (rev.) New York: Dover, 1953.