Wace, Nigel. “World Thermal Climates and the Concepts of Seasonality and Continentality in Climate Classification”. ERDKUNDE 44, no. 4 (December 31, 1990): 237–259. Accessed December 11, 2024. https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2214.