Humlumn, Ole. “A. Faniran and L. K. Jeje: Humid Tropical Geomorphology: A Study of the Geomorphological Processes and Landforms in Warm Humid Climates”. Geografisk Tidsskrift 88 (januar 1, 1988). Set december 7, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/44587.