APA引文

Alfaro Ureña, A. (2019). Gains from trade: The Costa Rican case.

Citación estilo Chicago

Alfaro Ureña, Alonso. Gains From Trade: The Costa Rican Case. 2019.

MLA引文

Alfaro Ureña, Alonso. Gains From Trade: The Costa Rican Case. 2019.

警告：这些引文格式不一定是100％准确.