APA (7 वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development & ProQuest (Firm). (2005). Environmental requirements and market access. OECD.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development और ProQuest (Firm). Environmental Requirements and Market Access. Paris: OECD, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Organisation for Economic Co-operation and Development और ProQuest (Firm). Environmental Requirements and Market Access. OECD, 2005.
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