Hunter, Eric J., author
Ashgate , 2002
Buku Teks
Kao, Mary Liu
Haworth Press, 1995
Buku Referensi
Joudrey, Daniel N., author
Libraries Unlimited, 2015
Buku Teks
Taylor, Arlene G., author
Libraries Unlimited, 2006
Buku Teks
Vickery, B.C. (Brian Campbell), author
Butterworth, 1975
Buku Teks