APA-ийн эшлэл(7 дахь хэвлэлт)

Sky, T. (2011). The National Road and the difficult path to sustainable national investment. University of Delaware Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Sky, Theodore. The National Road and the Difficult Path to Sustainable National Investment. Newark: University of Delaware Press, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Sky, Theodore. The National Road and the Difficult Path to Sustainable National Investment. University of Delaware Press, 2011.