McCracken, Daniel D., author
John Wiley & Sons, 1974
Buku Referensi
Wiedmann, Clark, author
Petrocelli Books, 1974
Buku Referensi
Brailsford, D.F., author
Ellis Horwood, 1979
Buku Teks
Grisworld, Ralph E.
Prentice-Hall, 1983
Buku Teks
LePage, Wilbur R., author
Prentice-Hall, 1978
Buku Teks