Tomz, Michael; Goldstein, Judith L; Rivers, Douglas (2007). "Do We Really Know That the WTO Increases Trade? Comment". American Economic Review (dalam bahasa Inggeris). 97 (5): 2005–2018. doi:10.1257/aer.97.5.2005. ISSN0002-8282.
Tomz, Michael; Goldstein, Judith L; Rivers, Douglas (2007). "Do We Really Know That the WTO Increases Trade? Comment". American Economic Review (dalam bahasa Inggeris). 97 (5): 2005–2018. doi:10.1257/aer.97.5.2005. ISSN0002-8282.