Ballou, Ronald H., author
Ginn, 1943
Buku Teks
Bauer, George N., author
D.C. Heath, 1932
Buku Teks
Davis, Hannibal Albert, author
American Book, 1933
Buku Teks
Wenwerth, George
Ginn and Co., 1914
Buku Teks
Pignani, Tullio J., author
Harcourt, Brace, and World, 1968
Buku Teks