APA-referens (7:e uppl.)

Lawhead, W. F. (2006). The philosophical journey: An interactive approach (3rd ed.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Lawhead, William F. The Philosophical Journey: An Interactive Approach. 3rd ed. Boston, MA: McGraw-Hill, 2006.

MLA-referens (9:e uppl.)

Lawhead, William F. The Philosophical Journey: An Interactive Approach. 3rd ed. McGraw-Hill, 2006.