Gao, Yan Department Artifacts, Action, Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
http://www.environmentandsociety.org/arcadia/unifying-yangzi-watershed-early-twentieth-century-china (全文テキスト（全般）)
environment_amp_society_portal_-_unifying_the_yangzi_watershed_in_early_twentieth-century_china_-_2019-09-12.pdf (全文テキスト（全般）), 3MB
Gao, Y. (2019). Unifying the Yangzi Watershed in Early Twentieth-Century China. Arcadia, Environment & Society Portal, (28). doi:10.5282/rcc/8747.
