Wood, William
Percival Marshall, 1949
Buku Teks
Carnahan, Charles Wendell
The C.V. Mosby Company, 1955
Buku Teks
Gould, William B., IV, author
MIT Press, 1982
Buku Teks
Rosenberg, Peter D., author
Clark Boardman, 1975
Buku Teks
Williams, David, author
Sweet & Makwell, 2000
Buku Teks