Lipman, M., Sharp, A. M., & Oscanyan, F. S. (1980). Philosophy in the classroom (2nd ed.). Philadelphia: Temple University Press.
Čikaški stil citiranjaLipman, Matthew., Ann Margaret Sharp, i Frederick S. Oscanyan. Philosophy in the Classroom. 2nd ed. Philadelphia: Temple University Press, 1980.
MLA način citiranjaLipman, Matthew., Ann Margaret Sharp, i Frederick S. Oscanyan. Philosophy in the Classroom. 2nd ed. Philadelphia: Temple University Press, 1980.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.