Zemke, Ron
E-Service : 24 ways to keep your customers-when the competition is just a click away
Amacom, 2000
Buku Teks SO
Sexton, Don
Trump University marketing 101: nasihat pemasaran terbaik dihadapan anda = Trump University marketing 101: how to use the most powerful ideas in marketing to get more customers and keep them
Bhuana Ilmu Populer, 2006
Buku Teks SO
Francese, Peter
Capturing customers
Golden Books Centre, 1992
Buku Teks
Hall, Stacey
Attracting perfect customers = Menguasai pasar dengan kekuatan : menguasai pasar dengan synchronicity strategic / Stacey Hall and Jan Brogniez; alih bahasa Rudijanto
Bhuana Ilmu Populer, 2003
Buku Teks SO
Arthur, Lisa
Big data marketing: engage your customers more effectively and drive value
Wiley, 2014
Buku Teks SO