Calvez, Jean Paul
John Wiley & Sons, 1993
Buku Teks SO
M. Teresa Higuera-Toledano, Andy J. Wellings
Springer, 2012
eBooks
Blackman, Maurice
John Wiley & Sons, 1975
Buku Teks
Burns, Alan
Addison-Wesley, 1990
Buku Teks SO
Massa, Anthony J.
Prentice-Hall, 2003
Buku Teks SO