Burcham, W.E.
Longman , 1978
Buku Teks
Cohen, Bernard Leonard, 1924-, author
Tata McGraw-Hill, 1971
Buku Teks
Hodgson, P.E. (Peter Edward), author
Clarendo Press, 1997
Buku Teks
Enge, Harald A.
Addison-Wesley Publishing , 1966
Buku Teks
Keepin, G. Robert
Addison-Wesley, 1965
Buku Teks