APA Citation

Helble, M., & Okubo, T. (2012). Heterogeneous Quality Firms and Trade Costs. World Bank, Washington, DC.

Chicago Style Citation

Helble, Matthias, and Toshihiro Okubo. Heterogeneous Quality Firms and Trade Costs. World Bank, Washington, DC, 2012.

MLA Citation

Helble, Matthias, and Toshihiro Okubo. Heterogeneous Quality Firms and Trade Costs. World Bank, Washington, DC, 2012.

Warning: These citations may not always be 100% accurate.