Richardson, James T.
Plenum Press, 1989
Buku Teks
Artikel Jurnal
Morbidelli, Massimo
Cambridge University Press , 2001
Buku Teks
Stiles, Alvin B., 1909-
Marcel Dekker, c1983
Buku Teks
edited by Michael Rines
Gower in Association with Marketing Magazine, 1981
Buku Teks