(1999). Trade associations directory 1999. Department of Trade and Industry, Bureau of Domestic Trade.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTrade Associations Directory 1999. Makati City: Department of Trade and Industry, Bureau of Domestic Trade, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTrade Associations Directory 1999. Department of Trade and Industry, Bureau of Domestic Trade, 1999.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.