Downes, Valerie A., author
Prentice-Hall, 1982
Buku Teks
Wegner, Peter, author
Prentice-Hall, 1980
Buku Teks
Johnson, Philip I., author
McGraw-Hill, 1985
Buku Teks
Barnes, J. G. P. (John Gilbert Presslie), author
Addison-Wesley, 1981
Buku Teks
Stratford-Collins, M.J., author
Ellis Horwood, 1982
Buku Teks