Gates, Earl D., 1945-
Delmar Cengage Learning, 2012
Buku Teks
Gray, Paul E.
Wiley Eastern, 1969
Buku Teks
Romanowitz, H. Alex
John Wiley & Sons, 1968
Buku Teks
Faissler, William L.
John Wiley & Sons, 1991
Buku Teks
Mitchell, F. H.
Prentice-Hall, 1992
Buku Teks