edited by Michael Rines
Gower in Association with Marketing Magazine, 1981
Buku Teks
Ferrell, O.C.
Thomson South-Western, 2008
Buku Teks
edited by Victor P. Buel and Carl Heyel
McGraw-Hill, c1970
Buku Teks
Gary L. Lilien, editor
Edward Elgar, 2012
Buku Teks
Subhash C. Jain, David A. Griffith, editor
Edward Elgar, 2011
Buku Teks