susetyo, ferdyan, and Rossanto Dwi Handoyo. 2016. “The Effect of Trade Facilitation on Trade Margin of 8 ASEAN-China Free Trade Area Countries (ACFTA): A Gravity Model Approach”. Journal of Developing Economies 1 (2):122-33. https://doi.org/10.20473/jde.v1i2.3297.