Serow, Valery
Springer International Publishing, 2017
eBooks
Mandl, F.
John Wiley & Sons, 1971
Buku Teks SO
Lindgren, Bernard W.
Macmillan, 1968
Buku Teks SO
Aitken, A.C.
Oliver and Boyd , 1974
Buku Teks SO
Butkov, Eugene
Addison-Wesley, 1968
Buku Teks SO