Petersen, Peter
Springer, 2012
eBooks
Gruber, Marvin H.J., 1941
Wiley, 2014
Buku Teks SO
Pillis, John de
Holt, Rinehart and Winston, 1969
Buku Teks SO
Lawson, Terry
John Wiley & Sons, 1996
Buku Teks SO
Hadley, George, 1930-
Addison-Wesley, 1961
Buku Teks SO