Lowell, Mildred Hawksworth
The Scarecrow Press, 1968
Buku Teks
Quesada, Robert
Pearson Prentice Hall, 2005
Buku Teks
Boss, Richard W.
G.K. Hall Publishers, 1987
Buku Teks
Robertson, Deborah A.
American Library Association, 2005
eBooks
Robertson, Deborah A.
[American Library association, ], 2005
eBooks