(1899). Yearbook of the United States Department of Agriculture 1898. Government Printing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रYearbook of the United States Department of Agriculture 1898. Washington: Government Printing, 1899.
एमएलए (9वां संस्करण) प्रशस्ति पत्रYearbook of the United States Department of Agriculture 1898. Government Printing, 1899.
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