Schubert, Carlos. “The Glaciers of the Sierra Nevada De Merida (Venezuela): A Photographic Comparison of Recent Deglaciation”. ERDKUNDE 46, no. 1 (March 31, 1992): 58–64. Accessed December 4, 2024. https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2251.