APA (7e ed.) Bronvermelding

Herrera Carvajal, D. A., Rincón Bayona, J. E., & Sánchez, S. M. (2021). Behavior of the inorganic chemistry of bituminous coals in the Checua - Lenguazaque syncline. Universidad Pedagógica y Tecnológica de Colombia - UPTC.

Chicago (17e ed.) Bronvermelding

Herrera Carvajal, David Alejandro, John Elkin Rincón Bayona, en Sandra Manosalva Sánchez. Behavior of the Inorganic Chemistry of Bituminous Coals in the Checua - Lenguazaque Syncline. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2021.

MLA (9e ed.) Bronvermelding

Herrera Carvajal, David Alejandro, et al. Behavior of the Inorganic Chemistry of Bituminous Coals in the Checua - Lenguazaque Syncline. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2021.