APA (7e ed.) Bronvermelding

Echeverry-Vargas, L., Rojas-Reyes, N. R., & Estupiñán, E. (2017). Characterization of copper smelter slag and recovery of residual metals from these residues. Universidad Pedagógica y Tecnológica de Colombia.

Chicago (17e ed.) Bronvermelding

Echeverry-Vargas, Luver, Néstor Ricardo Rojas-Reyes, en Edgar Estupiñán. Characterization of Copper Smelter Slag and Recovery of Residual Metals from These Residues. Universidad Pedagógica y Tecnológica de Colombia, 2017.

MLA (9e ed.) Bronvermelding

Echeverry-Vargas, Luver, et al. Characterization of Copper Smelter Slag and Recovery of Residual Metals from These Residues. Universidad Pedagógica y Tecnológica de Colombia, 2017.