APA (7th ed.) Citation
Helpman, E., & Krugman, P. R. (1994). Trade Policy and Market Structure (1. ed., 4. print.). The MIT Press.
Chicago Style (17th ed.) Citation
Helpman, Elhanan, and Paul R. Krugman. Trade Policy and Market Structure. 1. ed., 4. print. Cambridge: The MIT Press, 1994.
MLA (9th ed.) Citation
Helpman, Elhanan, and Paul R. Krugman. Trade Policy and Market Structure. 1. ed., 4. print. The MIT Press, 1994.
Warning: These citations may not always be 100% accurate.