edited by John Miksic
Archipelago Press, [date of publication not identified]
Buku Teks SO
Caldwell, Wallace Everett
Holt, Rinehart and Winston, 1963
Buku Teks SO
Bone, Robert G.
Littlefield, Adam, 1957
Buku Teks SO
Beck, Roger
Blackwell Publishing, 2007
Buku Teks
Windelband, Wilhelm
Dover, 1956
Buku Teks SO