APA (7th ed.) Citation

Black, J. D. (1950). The rural economy of New England, a regional study. Harvard University Press.

Chicago Style (17th ed.) Citation

Black, John Donald. The Rural Economy of New England, a Regional Study. Cambridge: Harvard University Press, 1950.

MLA (9th ed.) Citation

Black, John Donald. The Rural Economy of New England, a Regional Study. Harvard University Press, 1950.