APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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