APA-ийн эшлэл(7 дахь хэвлэлт)

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.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Gamba, Gloria Patricia, Héctor Javier Fuentes López, ба Leonardo Emiro Contreras. Effects of Foreign Investment in Colombian Mining and Four Countries in the Region. Universidad Pedagógica y Tecnológica de Colombia, 2013.

MLA -ийн эшлэл (9 дэх хэвлэлт)

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.