Thorne, W.J.
Oxford University Press , 1948
Buku Teks
Bradford, Frederick A.
Longmans, Green, 1932
Buku Teks
Basu, S.K.
Macmillan Press, 1974
Buku Teks
edited by Benyamin Haggott Beckhart
Columbia Universary Press, 1954, 1956
Buku Teks
Halm, George N.
Richard D. Irwin, 1956
Buku Teks