Olarte Riaño, J. R., García Espitia, D. F., & Posada Arrubla, A. (2021). A Perspective of Environmental and Geographic Engineering from the Scholarly Production of the Undergraduate Program. Universidad Pedagógica y Tecnológica de Colombia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Olarte Riaño, José Ricardo, Daniel Fernando García Espitia, و Adriana Posada Arrubla. A Perspective of Environmental and Geographic Engineering from the Scholarly Production of the Undergraduate Program. Universidad Pedagógica y Tecnológica de Colombia, 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Olarte Riaño, José Ricardo, et al. A Perspective of Environmental and Geographic Engineering from the Scholarly Production of the Undergraduate Program. Universidad Pedagógica y Tecnológica de Colombia, 2021.