edited by Michael Rines
Gower in Association with Marketing Magazine, 1981
Buku Teks
editor-in-chief, Robert H. Bishop
CRC Press, 2002
Buku Referensi
Maidment, David R., editor in chief
McGraw-Hill, 1993
Buku Referensi
Brierley, Sean, 1966-
Routledge, 1995
Buku Referensi
edited by Martyn V. Twigg
Wolfe Publishing, 1989
Buku Referensi