Cita APA (7th ed.)

Palmer, D. (2006). Looking at philosophy: The unbearable heaviness of philosophy made lighter (4th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Palmer, Donald. Looking at Philosophy: The Unbearable Heaviness of Philosophy Made Lighter. 4th ed. Boston: McGraw-Hill, 2006.

Cita MLA (9th ed.)

Palmer, Donald. Looking at Philosophy: The Unbearable Heaviness of Philosophy Made Lighter. 4th ed. McGraw-Hill, 2006.