APA (7th ed.) Citation

Lehrer, K. (2000). Theory of knowledge (2. ed.). Westview Press.

Chicago Style (17th ed.) Citation

Lehrer, Keith. Theory of Knowledge. 2. ed. Boulder [u.a.]: Westview Press, 2000.

MLA (9th ed.) Citation

Lehrer, Keith. Theory of Knowledge. 2. ed. Westview Press, 2000.