Dyfyniad APA
Gallman, R. E., & Wallis, J. J. (1992). American Economic Growth and Standards of Living Before the Civil War. University of Chicago Press.
Dyfyniad Arddull Chicago
Gallman, Robert E., and John Joseph Wallis. American Economic Growth and Standards of Living Before the Civil War. Chicago: University of Chicago Press, 1992.
Dyfyniad MLA
Gallman, Robert E., and John Joseph Wallis. American Economic Growth and Standards of Living Before the Civil War. University of Chicago Press, 1992.
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