Gaya APA

Greenstein, M., Vasarhelky, M. (2002). Electronic Commerce : security, risk management and control (2). Boston: Mc Graw-Hill Irwin.

Gaya MLA

Greenstein, Marlilyn., Vasarhelky, Mikolas. "Electronic Commerce : security, risk management and control". 2 Boston: Mc Graw-Hill Irwin, 2002. Text.