Peters, M. (1998). The challenge of copyright in the digital age. IN Managing software [column]. Manila Bulletin.
Chicago-viite (17. p.)Peters, Marybeth. "The Challenge of Copyright in the Digital Age. IN Managing Software [column]." Manila Bulletin 1998.
MLA-viite (9. p.)Peters, Marybeth. "The Challenge of Copyright in the Digital Age. IN Managing Software [column]." Manila Bulletin, 1998.
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