Standards of practice handbook: the code of ethics and the standards of professional conduct with commentary and interpretation
by Association for investment management and research
AIMR , 1990
 Buku Teks
Stallings, William
Handbook of computer-communications standards
Howard W. Sams & Company, 1989
 Buku Referensi
Accounting handbook 1992
Prentice-Hall, 1991
 Buku Referensi
Standards of emergency nursing practice
Mosby Year Book, 1991
 Buku Teks
Hoover`s handbook of American business 1992
edited by Gary Hoover, Alta Campbell, Patrick Spain
The Reference Press, 1991
 Buku Referensi