(1992). Revised manual of rules and regulations governing foreign trade transactions. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Revised Manual of Rules and Regulations Governing Foreign Trade Transactions." Manila Bulletin 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Revised Manual of Rules and Regulations Governing Foreign Trade Transactions." Manila Bulletin, 1992.
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