Cita APA (7a ed.)
Salvatici, L. (2012). The gravity model in international trade. International Food Policy Research Institute.
Cita Chicago Style (17a ed.)
Salvatici, Luca. The Gravity Model in International Trade. International Food Policy Research Institute, 2012.
Cita MLA (9a ed.)
Salvatici, Luca. The Gravity Model in International Trade. International Food Policy Research Institute, 2012.
Precaución: Estas citas no son 100% exactas.