Bebbington, R.
Bernard Babani, 1995
Buku Teks
Penfold, R.A.
Bernard Babani, 1995
Buku Teks
Pederson, Donald O., author
McGraw-Hill, 1966
Buku Teks
Malvino, Albert Paul, author
Erlangga, 1984
Buku Teks
Malvino, Albert Paul, author
Erlangga, 1987
Buku Teks