Draper, E. G. (1918). Lectures in navigation: Prepared for use as a text book at the Officer's material school, Naval auxiliary reserve.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDraper, Ernest Gallaudet. Lectures in Navigation: Prepared for Use as a Text Book at the Officer's Material School, Naval Auxiliary Reserve. [Pelham Bay? N. Y, 1918.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDraper, Ernest Gallaudet. Lectures in Navigation: Prepared for Use as a Text Book at the Officer's Material School, Naval Auxiliary Reserve. 1918.
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