APA-ийн эшлэл(7 дахь хэвлэлт)

Mokyr, J. (1990). The lever of riches: Technological creativity and economic progress. Oxford University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Mokyr, Joel. The Lever of Riches: Technological Creativity and Economic Progress. New York: Oxford University Press, 1990.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Mokyr, Joel. The Lever of Riches: Technological Creativity and Economic Progress. Oxford University Press, 1990.