Haynes, Colin
Aslib, 1995
Buku Teks
Iman Sjahputra Tunggal
Prenhallindo, 2002
Buku Teks
Wertheim, Margaret
Doubleday , 1999
Buku Teks
Azy Barak, editor
Cambridge University Press, 2008
Buku Teks
Spinello, Richard A.
Jones and Bartlett Learning, 2017
Buku Teks