Norman, R.O.C.
Chapman and Hall , 1978
Buku Teks
Mackie, Raymond K., author
Addiason Wesley Longman, 1999
Buku Teks
Kice, John L., author
Macmillan, 1972
Buku Teks
Geissman, T.A., author
W.H. Freeman, 1968
Buku Teks
Geissman, T.A., author
W.H. Freeman, 1959
Buku Teks