Steel, Robert George Douglas, 1917-
McGraw-Hill, 1980
Buku Teks SO
Riggs, Douglas Shepard
The Williams&Wilkins , 1963
Buku Teks
Steel, Robert George Douglas, 1917-
McGraw-Hill, 1960
Buku Teks SO
Pagano, Marcello
Duxbury Press, 1993
Buku Teks
Neuhauser, Claudia
Prentice-Hall, 2000
Buku Teks SO