Cita APA (7th ed.)

Stumpf, S. E., & Fieser, J. (2003). Philosophy: History & problems (6th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Stumpf, Samuel Enoch, i James Fieser. Philosophy: History & Problems. 6th ed. Boston: McGraw-Hill, 2003.

Cita MLA (9th ed.)

Stumpf, Samuel Enoch, i James Fieser. Philosophy: History & Problems. 6th ed. McGraw-Hill, 2003.