Jonathan Barnes. (2000). The Presmatic philosophers. Routledge.
Chicago-čujuhus (17. p.)Jonathan Barnes. The Presmatic Philosophers. Lamdım: Routledge, 2000.
MLA-čujuhus (9. p.)Jonathan Barnes. The Presmatic Philosophers. Routledge, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.