Bold, Harold Charles, 1909-
Prentice-Hall, 1985
Buku Referensi
Bold, Harold Charles, 1909-
Prentice-Hall, 1976
Buku Teks SO
Hoek, C. van den
Cambridge University Press, 2002
Buku Teks SO
Sharma, O.P., 1953-
McGraw-Hill, 1986
Buku Teks SO
Chapman, V.J. [Valentine Jackson], 1910-
Cambridge University Press, 2013
Buku Teks SO