Knowles, Malcolm S., author
Cambridge University Press, 1980
Buku Teks
American Library Association, 1970
Buku Teks
American Library Association, 1970
Buku Teks
Jossey - Bass Publishers , 1996
Buku Teks
Rengganis Lenggogeni Biran, author
2003
UI - Skripsi (Membership)