Brophy, Peter
Facet, 2005
Buku Teks SO
Lydia Fahmawati
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2012
UI - Skripsi Open
Evino Sugriarta
2001
UI - Tesis Membership
Knapp, Patricia B.
American Library Association , 1970
Buku Teks SO
Brown, Sally
Library Association, 1997
Buku Teks SO