Hagler, Ronald, author
American Library Association, 1991
Buku Teks
Hagler, Ronald, author
American Library Association, 1997
Buku Teks
Chandos, 2013
eBooks
Amarul Rizal Azhar, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2015
UI - Tesis (Membership)
Harrington, Jon, author
Prentice-Hall, 1991
Buku Teks