APA-referens (7:e uppl.)

Velasquez, M. G. (2008). Philosophy: A text with readings (10th ed.). Thomson/Wadsworth.

Chicago-referens (17:e uppl.)

Velasquez, Manuel G. Philosophy: A Text with Readings. 10th ed. Australia ; Belmont, CA: Thomson/Wadsworth, 2008.

MLA-referens (9:e uppl.)

Velasquez, Manuel G. Philosophy: A Text with Readings. 10th ed. Thomson/Wadsworth, 2008.