Elliott, William Y.
Western political heritage
Prentice-Hall, 1950
 Buku Teks SO
Easton, Stewart C.
The Western heritage
Holt, Rinehart and Winston, 1966
 Buku Teks SO
Heritage of Western civilization selected readings
edited by John Louis Beatty and Oliver A. Johnson
Prentice-Hall, 1966
 Buku Teks SO
Heritage of Western civilization : select reading
edited by John Louis Beatty, Oliver A. Johnson
Prentice-Hall, 1966
 Buku Teks SO
McDonald, Lee Cameron
Western political theory
Harcour Brace Jovanwich, 1968
 Buku Teks