APA引文

HELPMAN, E. (1992). Trade Policy And Market Structure. The Mit Press.

Chicago Style (17th ed.) Citation

HELPMAN, Elhanan. Trade Policy And Market Structure. The Mit Press, 1992.

MLA引文

HELPMAN, Elhanan. Trade Policy And Market Structure. The Mit Press, 1992.

警告：這些引文格式不一定是100％准確.