Chan, Sewell. "Hundreds Stranded Online by Botched M.T.A. 'Webinar'." The New York Times [online edition] www.nytimes.com (10 December 2007).

Chan, Sewell. "Hundreds Stranded Online by Botched M.T.A. 'Webinar'." The New York Times [online edition] www.nytimes.com (10 December 2007).