Sudargo Gautama, author
Citra Aditya Bakti, 1993
Buku Teks
Flemming, Barbara, author
Brill, 2018
eBooks
North, Peter
Claredon Press, 1993
Buku Teks
Mill, J.S.
Penguin Books, 1987
Buku Teks
Eisenstadt, S. N. (Shmuel Noah), author
John Wiley , 1965
Buku Teks