APA (7th ed.) Citation
Martin, W., & Pham, C. S. (2020). Estimating the gravity model when zero trade flows are frequent and economically determined. Taylor and Francis.
Chicago Style (17th ed.) Citation
Martin, Will, and Cong S. Pham. Estimating the Gravity Model When Zero Trade Flows Are Frequent and Economically Determined. Taylor and Francis, 2020.
MLA (9th ed.) Citation
Martin, Will, and Cong S. Pham. Estimating the Gravity Model When Zero Trade Flows Are Frequent and Economically Determined. Taylor and Francis, 2020.
Warning: These citations may not always be 100% accurate.