Cita APA (7a ed.)

Beth, E. W. (1970). Aspects of modern logic. D. Reidel.

Cita Chicago Style (17a ed.)

Beth, Evert Willem. Aspects of Modern Logic. Dordrecht: D. Reidel, 1970.

Cita MLA (9a ed.)

Beth, Evert Willem. Aspects of Modern Logic. D. Reidel, 1970.