Pritchard, D. (2010). What is this thing called knowledge? (2. ed.). Routledge.
Čikaški stil citiranja (17. izdanje)Pritchard, Duncan. What Is This Thing Called Knowledge? 2. ed. London [u.a.]: Routledge, 2010.
MLA način citiranja (8. izdanje)Pritchard, Duncan. What Is This Thing Called Knowledge? 2. ed. Routledge, 2010.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.