Kulling, M., & Parkins, D. (2012). Going up!: Elisha Otis's trip to the top. Tundra Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKulling, Monica, और David Parkins. Going Up!: Elisha Otis's Trip to the Top. Toronto: Tundra Books, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKulling, Monica, और David Parkins. Going Up!: Elisha Otis's Trip to the Top. Tundra Books, 2012.
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