González-Sierra, M. A., & Lara-González, L. Á. (2014). Diagnosis of accidents in the small and medium mining of Boyacá. Universidad Pedagógica y Tecnológica de Colombia - UPTC.
Citazione stile Chigago Style (17a edizione)González-Sierra, Miguel Alfonso, e Luis Ángel Lara-González. Diagnosis of Accidents in the Small and Medium Mining of Boyacá. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2014.
Citatione MLA (9a ed.)González-Sierra, Miguel Alfonso, e Luis Ángel Lara-González. Diagnosis of Accidents in the Small and Medium Mining of Boyacá. Universidad Pedagógica y Tecnológica de Colombia - UPTC, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.
