Brink, Raymond
D. Appleton-Century Co., 1940
Buku Teks
Rice, Bernard J., author
Prindle, Weber & Schmidt, 1975
Buku Teks
Buchanan, Herbert E., author
Johnson Pub., 1926
Buku Teks
Fuller, Gordon, author
McGraw-Hill, 1972
Buku Teks
Ballou, Ronald H., author
Ginn, 1943
Buku Teks