Cita APA (7a ed.)

Wolfram, S. (1989). Philosophical logic: An introduction. Routledge.

Cita Chicago Style (17a ed.)

Wolfram, Sybil. Philosophical Logic: An Introduction. London: Routledge, 1989.

Cita MLA (9a ed.)

Wolfram, Sybil. Philosophical Logic: An Introduction. Routledge, 1989.