Whyte, W.S.
Butterworth, 1985
Buku Teks
McCormac, Jack C., author
Prentice-Hall, 1995
Buku Teks
Evett, Jack B., 1942-, author
Prentice-Hall, 1991
Buku Teks
Brinker, Russell C
Erlangga, 1986
Buku Teks
McCormac, Jack C., author
Prentice-Hall, 1983
Buku Teks