Cita APA (7a ed.)

Langer, S. K. (1953). An introduction to symbolic logic. Dover.

Cita Chicago Style (17a ed.)

Langer, Susanne K. An Introduction to Symbolic Logic. Nueva York: Dover, 1953.

Cita MLA (8a ed.)

Langer, Susanne K. An Introduction to Symbolic Logic. Dover, 1953.