Akers, Susan Grey, author
American Library Association, 1954
Buku Referensi
Kao, Mary Liu, author
The Haworth Press, 1995
Buku Teks
Ryan, Neal, author
Prentice-Hall, 2003
Buku Teks
Brown, Everett S.
Appleton-Century-Crofts, Inc., 1950
Buku Teks
Hirshberg, Herbert S., author
American Library Association, 1947
Buku Teks