Roy, Robert H., author
John Hopkins Press, 1958
Buku Teks
Lundgren, Earl F., author
Confield, 1974
Buku Teks
Thurston, Phillip H., author
Harvard University, 1959
Buku Teks
Pfifner, John M., author
Prentice-Hall, 1960
Buku Teks
Thompson, James D., author
Transaction Publishers, 2003
Buku Teks