WINARNO, Gunardi D.; AVENZORA, Ricky; BASUNI, Sambas; BISMARK, M. The Planning of Ecotourism Opportunities Spectrum of Elephant Related Ecotourism Activities on Sumatran Elephant Home Range in Bukit Barisan Selatan National Park Province Lampung Indonesia. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 22, n. 2, p. 130–148, 2015. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/3947. Acesso em: 11 sep. 2025.