Não informado. (1891). American school board journal. American School Board.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. American School Board Journal. Milwaukee, Wis: American School Board, 1891.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. American School Board Journal. American School Board, 1891.
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