APA (7th ed.) Citation

Du, D. G., & Guingona, B. T. Interregional terms of trade.

Chicago Style (17th ed.) Citation

Du, Denis G., and Bartholome T. Guingona. Interregional Terms of Trade.

MLA (9th ed.) Citation

Du, Denis G., and Bartholome T. Guingona. Interregional Terms of Trade.

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