APA (7 वां संस्करण) प्रशस्ति पत्र
Chen, Y. (2004). Promotion of renewable energy globally: Based on Johannesburg follow-up. Nordic Council of Ministers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Chen, Youn. Promotion of Renewable Energy Globally: Based on Johannesburg Follow-up. Copenhagen: Nordic Council of Ministers, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Chen, Youn. Promotion of Renewable Energy Globally: Based on Johannesburg Follow-up. Nordic Council of Ministers, 2004.
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