Cita APA (7th ed.)

Laird, S. (1988). Trends in nontariff barriers of developed countries. International Economics Dept., World Bank.

Cita Chicago (17th ed.)

Laird, Sam. Trends in Nontariff Barriers of Developed Countries. Washington, D.C: International Economics Dept., World Bank, 1988.

Cita MLA (9th ed.)

Laird, Sam. Trends in Nontariff Barriers of Developed Countries. International Economics Dept., World Bank, 1988.