International Trade Centre/Philippine Trade Training Center. (2000). Trade secrets: The export answer for small and mediun-sized exporters - Philippines. PTTC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Trade Centre/Philippine Trade Training Center. Trade Secrets: The Export Answer for Small and Mediun-sized Exporters - Philippines. Geneva : ITC; Manila: PTTC, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Trade Centre/Philippine Trade Training Center. Trade Secrets: The Export Answer for Small and Mediun-sized Exporters - Philippines. PTTC, 2000.
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