U, P. L. (2006). Toward a national tax policy for E-commerce. Philippine APEC Study Center Network Philippine Institute for Development Studies.
Chicago-viite (17. p.)U, Peter Lee. Toward a National Tax Policy for E-commerce. Makati City: Philippine APEC Study Center Network Philippine Institute for Development Studies, 2006.
MLA-viite (9. p.)U, Peter Lee. Toward a National Tax Policy for E-commerce. Philippine APEC Study Center Network Philippine Institute for Development Studies, 2006.
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