APA (7th ed.) Citation

Romer, P. M. (1993). New goods, old theory, and the welfare costs of trade restrictions.

Chicago Style (17th ed.) Citation

Romer, Paul M. New Goods, Old Theory, and the Welfare Costs of Trade Restrictions. Cambridge, MA, 1993.

MLA (9th ed.) Citation

Romer, Paul M. New Goods, Old Theory, and the Welfare Costs of Trade Restrictions. 1993.