Fuchs, Stephen
Asia Publishing House, 1963
Buku Teks
Wendt, Herbert
Houghton-Mifflin, 1956
Buku Teks
Pilbeam, David
Funk and Wangnalls, 1970
Buku Teks
edited by Louise B. Young
Oxford University Press, 1970
Buku Teks
Clark, Wilfrid E. Le Gros
Quadrangle Books, 1971
Buku Teks