edited by Rosalind S. Miller, and Helen Rehr
Prentice-Hall, 1983
Buku Teks
edited by Steven Spirn and David W. Benfer
Aspen Systems Corporation, 1982
Buku Teks
edited by Eileen E. Morrison, Beth Furlong
Jones & Bartlett Learning, 2014
Buku Teks
Mike Luck, Rob Pocock, Mike Tricker, editor
Routledge, 2000
Buku Teks
Bernard, Miriam
Open University Press , 2000
Buku Teks