Gaya APA

Lawhead, W, F. (2011). The Philosophical Journey: an interactive approach (Ed. 5). New York: The McGraw-Hill Companies.

Gaya MLA

Lawhead, William, F.. "The Philosophical Journey: an interactive approach". Ed. 5 New York: The McGraw-Hill Companies, 2011. Skripsi, Tesis, Disertasi.