Maxwell, Robert L., author
American Library Association, 2002
Buku Teks
Maxell, Robert L., author
American Library Association, 2002
Buku Referensi
Hochstadt, Harry, author
John Wiley & Sons, 1973
Buku Teks
edited by M. Farkas
North-Holland, 1977
Buku Teks
Agnew, Ralph Palmer, author
McGraw-Hill, 1160
Buku Teks