Vanladians, Yavis, author
Andi, 1987
Buku Teks
Moore, John B., author
Reston Publishing, 1984
Buku Teks
Cooper, James W., author
John Wiley & Sons, 1981
Buku Teks
Lewis, T.G. (Theodore Gyle), author
Reston Publishing, 1981
Buku Teks
Moore, Lawrie, author
Ellis Horwood Limited, 1980
Buku Teks