Holm Jakobsen, Bjarne. “Delvin Seymour Fanning, Mary Christine Balluff Fanning: Soil: Morphology, Genesis and Classification”. Geografisk Tidsskrift - Danish Journal of Geography 90 (January 1, 1990). Accessed August 31, 2026. https://tidsskrift.dk/geografisktidsskrift/article/view/44814.