APA (7 वां संस्करण) प्रशस्ति पत्र

Sapalo, I. S. Philippine law on patents trademarks and copyright: (background reading material on intellectual property, philippine national supplement).

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Sapalo, Ignacio S. Philippine Law on Patents Trademarks and Copyright: (background Reading Material on Intellectual Property, Philippine National Supplement).

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Sapalo, Ignacio S. Philippine Law on Patents Trademarks and Copyright: (background Reading Material on Intellectual Property, Philippine National Supplement).

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