Bortles, L. (2001). Websites that work for you. AmCham Philippines Business Journal.
Cita Chicago (17th ed.)Bortles, Larry. "Websites That Work for You." AmCham Philippines Business Journal 2001.
Cita MLA (9th ed.)Bortles, Larry. "Websites That Work for You." AmCham Philippines Business Journal, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.