Eisenstadt, S. N. (Shmuel Noah), author
The Free Press, 1978
Buku Teks
Salvemini, Gaetano
W.W. Norton & Company, 1962
Buku Teks
Deutscher, Isaac
Oxford University Press, 1967
Buku Teks
Reid, Anthony, 1939-, author
Longman, 1974
Buku Teks
Fitzgerald, C. P.
Cresset Press, 1953
Buku Teks