Tài liệu tham khảo

WikiPedia: Đồng bằng sông Hằng http://www.lsmsa.edu/MKhandoker/environmental%20sc... http://en.banglapedia.org/index.php?title=Bengal_D... http://en.banglapedia.org/index.php?title=Ganges-P... //tools.wmflabs.org/geohack/geohack.php?language=v... https://books.google.com/books?id=Co_VIPIJerIC&pg=... https://books.google.com/books?id=fGvMz4bMACAC https://id.loc.gov/authorities/subjects/sh91001143 https://d-nb.info/gnd/4341928-8 https://archive.org/details/in.ernet.dli.2015.2118... https://web.archive.org/web/20051026160753/http://...