Yap, J. T. (1990). The Philippines: Recent performance, prospects for 1990-91 and policy development issues. Philippine Institute for Development Studies.
Παραπομπή σε μορφή Chicago (17η εκδ.)Yap, Josef T. The Philippines: Recent Performance, Prospects for 1990-91 and Policy Development Issues. Makati, Metro Manila: Philippine Institute for Development Studies, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)Yap, Josef T. The Philippines: Recent Performance, Prospects for 1990-91 and Policy Development Issues. Philippine Institute for Development Studies, 1990.
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