edited by Colin Harris
Taylor Graham, 1987
Buku Teks
Shultz, William J.
Prentice-Hall, 1951
Buku Teks
Hughes-Hassell, Sandra, author
[American Library association, American Library association], 2005
eBooks
Pitman, Randy, author
G.K. Hall & Co., 1992
Buku Teks
Klamer, Marian, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2021
Artikel Jurnal