Galvan, Jose L., author
Routledge, 2017
Buku Teks
Redman, Peter, author
Sage, 2001
Buku Teks
Carl M. White and associates: William W. Brickman ... [and others]
American Library Assoiation, 1973
Buku Referensi
Hart, Chris, author
Sage, 2003
Buku Teks
White, Carl M., author
Bedminster Press, 1964
Buku Teks