Arkell, A.J., author
University of London Press, 1961
Buku Teks
Hochin, Choi
Sekyung Printing Co., Ltd., 1988
Buku Teks
Robenso, James Harvey
Ginn , 1931
Buku Teks
Clapham, John, Sir, author
The Cambridge University Press, 1949
Buku Teks
Sastri, K.A. Nilakanta, author
Oxford University Press, 1958
Buku Teks