APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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