Fincher, E. B., author
Abelard-Schuman, 1955
Buku Teks
by A. F. Gustafson [and others]
Comstock Publishing Associates, 1961
Buku Teks
Myers, Gustavus, author
Random House, 1943
Buku Teks
Departement of Stetes Based, 1949
Buku Teks
Reischauer, Edwin O., author
Harvard University Press, 1950
Buku Teks