Hernandez Peña, Y. T., Vargas Cuervo, G., & Zafra Mejía, C. A. (2020). Perceptions of volcanic phenomena: Elements for risk management in Colombia. Universidad Pedagógica y Tecnológica de Colombia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHernandez Peña, Yolanda Teresa, German Vargas Cuervo, और Carlos Alfonso Zafra Mejía. Perceptions of Volcanic Phenomena: Elements for Risk Management in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHernandez Peña, Yolanda Teresa, et al. Perceptions of Volcanic Phenomena: Elements for Risk Management in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2020.
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