Chang, K. From dairy farms, a novel way to make a biofuel. Manila bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChang, Kenneth. "From Dairy Farms, a Novel Way to Make a Biofuel." Manila Bulletin .
एमएलए (9वां संस्करण) प्रशस्ति पत्रChang, Kenneth. "From Dairy Farms, a Novel Way to Make a Biofuel." Manila Bulletin, .
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