Villamil, W. M. (1999). Trade liberalization and child labor in the Philippines: A preliminary inquiry. The DLSU-Angelo King Institute for Economic and Business Studies.
Lua i Stíl Chicago (17ú heag.)Villamil, Winfred M. Trade Liberalization and Child Labor in the Philippines: A Preliminary Inquiry. Manila: The DLSU-Angelo King Institute for Economic and Business Studies, 1999.
Lua MLA (9ú heag.)Villamil, Winfred M. Trade Liberalization and Child Labor in the Philippines: A Preliminary Inquiry. The DLSU-Angelo King Institute for Economic and Business Studies, 1999.
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