Niño Barajas, L. (2012). a case study: A strategy for teaching environmental education. Universidad Pedagógica y Tecnológica de Colombia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNiño Barajas, Leomary. A Case Study: A Strategy for Teaching Environmental Education. Universidad Pedagógica y Tecnológica de Colombia, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNiño Barajas, Leomary. A Case Study: A Strategy for Teaching Environmental Education. Universidad Pedagógica y Tecnológica de Colombia, 2012.
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