APA (7th ed.) Citation

Williamson, J. G. (1971). Karl Helfferich, 1872-1924: Economist, Financier, Politician. Princeton University Press.

Chicago Style (17th ed.) Citation

Williamson, John G. Karl Helfferich, 1872-1924: Economist, Financier, Politician. Princeton, New Jersey: Princeton University Press, 1971.

MLA (8th ed.) Citation

Williamson, John G. Karl Helfferich, 1872-1924: Economist, Financier, Politician. Princeton University Press, 1971.