Trim, Donald W.
PWS, 1990
Buku Teks
Ames, William F., author
Academic Press, 1977
Buku Teks
Schechter, Martin, author
McGraw-Hill, 1977
Buku Teks
Duffy, Dean G., author
TAB prefessional and reference books, 1986
Buku Teks
Sneddon, Ian N.
McGraw-Hill, 1957
Buku Teks