APA (7th ed.) Citation

Shepherd, J. F., & Walton, G. M. (1972). Shipping, maritime trade, and the economic development of colonial North America. Univ. Press.

Chicago Style (17th ed.) Citation

Shepherd, James F., and Gary M. Walton. Shipping, Maritime Trade, and the Economic Development of Colonial North America. Cambridge: Univ. Press, 1972.

MLA (9th ed.) Citation

Shepherd, James F., and Gary M. Walton. Shipping, Maritime Trade, and the Economic Development of Colonial North America. Univ. Press, 1972.