Parmelee, Maurice
Philosiphical Library, 1960
Buku Teks
Trigger, Bruce G.
Cambridge University Press, 2006
Buku Teks
edited by Isaac Kramnick
[publisher not identified], 1969
Buku Teks
Wanlass, Lawrence C.
Appleton-Century-Crofts, 1953
Buku Teks
Thomas, Edward J. (Edward Joseph)
Routledge & Kegan Paul, 1951
Buku Teks