Black, Bruce J.
Edward Arnold, 1979
Buku Teks SO
Young, James F.
John Wiley & Sons, 1959
Buku Teks SO
DeGarmo, E. Paul
John Wiley & Sons, 1997
Buku Teks
R. Gregg Bruce [and others]
Pearson/Prentice Hall, 2004
Buku Teks SO
DeForest, W.S.
McGraw-Hill, 1975
Buku Teks