APA引文

Whalley, J. (1996). Why do countries seek regional trade agreementsn. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Whalley, John. Why Do Countries Seek Regional Trade Agreementsn. Cambridge: National Bureau of Economic Research, 1996.

MLA引文

Whalley, John. Why Do Countries Seek Regional Trade Agreementsn. National Bureau of Economic Research, 1996.

警告：這些引文格式不一定是100％准確.