Cita APA (7th ed.)

Beth, E. W. (1962). Formal methods: An introduction to symbolic logic and to the study of effective operations in arithmetic and logic. D. Reidel.

Cita Chicago (17th ed.)

Beth, Evert Willem. Formal Methods: An Introduction to Symbolic Logic and to the Study of Effective Operations in Arithmetic and Logic. Dordrecht: D. Reidel, 1962.

Cita MLA (9th ed.)

Beth, Evert Willem. Formal Methods: An Introduction to Symbolic Logic and to the Study of Effective Operations in Arithmetic and Logic. D. Reidel, 1962.