Letherman, K.M., author
Pergamon Press, 1981
Buku Teks
Traister, John E., author
Prentice-Hall, 1988
Buku Teks
Edwards, Harry J., author
McGraw-Hill, 1980
Buku Teks
Levenhagen, John I., author
McGraw-Hill, 1992
Buku Teks
Letherman, K.M., author
Pergamon Press, 1981;1981
Buku Teks