Ross, Lillian
J.B. Lippincott, 1966
Buku Teks SO
Muller, Herbert J.
Harper & Row, 1967
Buku Teks SO
Cicero, Quintus Tullius
Princeton University Press, 2012
Buku Teks SO
Hoppen, K. Theodore
Oxford University Press, 2016
eBooks
Dodd, Mead & Co. , 1964
Buku Teks