Hegel,G.W.F
The Boss-Merrill Company, INC, 1953
Buku Teks
Cairns, Huntington, 1904-1985
Johns Hopkins Press, 1967
Buku Teks
Cairns, Huntington
The John Hopkins Press, 1949
Buku Teks
Stumpf, Samuel Enoch, 1918-1998
McGraw-Hill, 2012
Buku Teks
Stanford, Michael
Blackwell Publishers, 1998
Buku Teks