edited by Christopher M. Perrins and Alex L.A. Middleton
Grolier International, 1993
Buku Referensi
edited by N.E. Collinge
Routledge, 1990
Buku Referensi
edited by Joseph S. Roucek
Philosophical Library, 1949
Buku Referensi
general editor, G.H.R. Parkinson; associate editors, T.E. Burke, J.G. Cottingham, M.A. Proudham and J.E. Tiles
Routledge, 1988
Buku Referensi
edited by Robin Middleton
MIT Press, 1996
Buku Teks