APA (7th ed.) Citation

Walsh, W. D. (1975). The diffusion of technological change in the Pennsylvania pig iron industry, 1850-1870. Arno Press.

Chicago Style (17th ed.) Citation

Walsh, William David. The Diffusion of Technological Change in the Pennsylvania Pig Iron Industry, 1850-1870. New York: Arno Press, 1975.

MLA (9th ed.) Citation

Walsh, William David. The Diffusion of Technological Change in the Pennsylvania Pig Iron Industry, 1850-1870. Arno Press, 1975.