Di Mana Gulma
Amerika Selatan | Inter-American Biodiversity Information Network |
Afrika Selatan | I.A.W. MacDonald (2003) - Invasive Alien Species in Southern Africa |
Asia Selatan | P.S. Negi & P.K. Hajra (2007) |
Australia | Weeds Australia |
Selandia Baru | CABI - Invasive Species Compendium |
Kepulauan Pasifik | Pacific Island Ecosystems at Risk (PIER) |
Samudera Hindia | Plants of the World Online |