Philippines. National Export Coordinating Center, Philippines. Board of Investments, & Philippines. Bureau of Commerce. (1971). Philippine export directory, 1970-71. Institute of Export Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Philippines. National Export Coordinating Center, Philippines. Board of Investments, και Philippines. Bureau of Commerce. Philippine Export Directory, 1970-71. Makati: Institute of Export Development, 1971.
Παραπομπή σε μορφή MLA (9th εκδ.)Philippines. National Export Coordinating Center, et al. Philippine Export Directory, 1970-71. Institute of Export Development, 1971.
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