Howell, G. R. (1896). Letter, To: "Mr. Thomas C. Middleton O.S.A." From: George R. Howell, August 13, 1896.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHowell, George Rogers. Letter, To: "Mr. Thomas C. Middleton O.S.A." From: George R. Howell, August 13, 1896. 1896.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHowell, George Rogers. Letter, To: "Mr. Thomas C. Middleton O.S.A." From: George R. Howell, August 13, 1896. 1896.
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