Gamba, G. P., López, H. J. F., & Contreras, L. E. (2013). Effects of foreign investment in Colombian mining and four countries in the region. Universidad Pedagógica y Tecnológica de Colombia.
芝加哥风格引文Gamba, Gloria Patricia, Héctor Javier Fuentes López, 与 Leonardo Emiro Contreras. Effects of Foreign Investment in Colombian Mining and Four Countries in the Region. Universidad Pedagógica y Tecnológica de Colombia, 2013.
MLA引文Gamba, Gloria Patricia, et al. Effects of Foreign Investment in Colombian Mining and Four Countries in the Region. Universidad Pedagógica y Tecnológica de Colombia, 2013.
警告：这些引文格式不一定是100％准确.
