Willbrown, Steven L., author
Michie Law, 1995
Buku Teks
Moran, Robert D., author
Moran Associates, 1992
Buku Teks
Hevi Dwi Oktaviani, author
2018
UI - Tesis (Membership)
Munch, James C.
Little, Brown and Company, 1981
Buku Teks
Cooper, Phillip J., author
Thomson Wadsworth, 2005
Buku Teks