Austria, M. S. (2003). ASEAN Free Trade Area. IN Business focus [column]: Lessons and challenges. Manila Bulletin.
Chicago-viite (17. p.)Austria, Myrna S. "ASEAN Free Trade Area. IN Business Focus [column]: Lessons and Challenges." Manila Bulletin 2003.
MLA-viite (9. p.)Austria, Myrna S. "ASEAN Free Trade Area. IN Business Focus [column]: Lessons and Challenges." Manila Bulletin, 2003.
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