Bromo-Tengger/Gunung Semeru proposed national park management plan 1981-1985. UNDP/FAO National Parks Development Project.
Chicago-referens (17:e uppl.)Bromo-Tengger/Gunung Semeru Proposed National Park Management Plan 1981-1985. UNDP/FAO National Parks Development Project.
MLA-referens (8:e uppl.)Bromo-Tengger/Gunung Semeru Proposed National Park Management Plan 1981-1985. UNDP/FAO National Parks Development Project.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.