Liptrot, G.F.
The English Language Book Society, 1974
Buku Teks
Jolly, William L., author
McGraw-Hill, 1984
Buku Teks
Huheey, James E., author
Harper & Row Publisher, 1973
Buku Teks
Huheey, James E., author
Harper & Row Publisher, 1972
Buku Teks
Cotton, F. Albert, author
UI-Press, 1989
Buku Teks