APA引文

Puga, D., & Venables, A. (1997). Preferential Trading Arrangements and Industrial Location.

Chicago Style (17th ed.) Citation

Puga, D., and A. Venables. Preferential Trading Arrangements and Industrial Location. 1997.

MLA引文

Puga, D., and A. Venables. Preferential Trading Arrangements and Industrial Location. 1997.

警告：這些引文格式不一定是100％准確.