APA-ийн эшлэл(7 дахь хэвлэлт)
McCaughey, R. (2014). A lever long enough: A history of Columbia's School of Engineering and Applied Science since 1864. Columbia University Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
McCaughey, Robert. A Lever Long Enough: A History of Columbia's School of Engineering and Applied Science Since 1864. New York: Columbia University Press, 2014.
MLA -ийн эшлэл (9 дэх хэвлэлт)
McCaughey, Robert. A Lever Long Enough: A History of Columbia's School of Engineering and Applied Science Since 1864. Columbia University Press, 2014.
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