Edson, Gary
Routledge, 1994
Buku Teks
Fopp, Michael A.
Routledge, 1997
Buku Referensi
edited by Michael Rines
Gower in Association with Marketing Magazine, 1981
Buku Teks
Mark Aronoff, Janie Rees-Miller
Wiley Blackwell, 2017
Buku Teks
edited by John T. Daugirdas, Peter G. Blake, Todd S. Ing.
Wolters Kluwer, 2001
Buku Referensi