Rowley, Jennifer, author
Clive Bingley , 1980
Buku Teks
Byrd, Patricia, author
Prentice-Hall, 1981
Buku Referensi
Ziarnik, Natalie Reif, author
American Library Association, 2003
eBooks
edited by Max F. Millikan
Little, Brown, 1961
Buku Teks
Ferguson, Elizabeth, author
Library Professional Publications , 1984
Buku Teks