Jeffrey C. Ady, author
Seoul National University, 2019
Artikel Jurnal
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1990
UI - Skripsi (Membership)
Blowers, Helene, author
[American Library association, American Library association], 2004
eBooks
by Angela Anning [et al.]
McGraw-Hill, 2006
Buku Teks
Editor by Cynthia Steinke
The Haworth Press , 1991
Buku Teks