Gaya APA

SAMBAS, E, N., SIREGAR, M. (2017). Floristic and forest structural study in Batangtoru Watershed, North Sumatra . Bogor: Perhimpunan Biologi Indonesia.

Gaya MLA

SAMBAS, Edy, Nasriadi., SIREGAR, Mustaid. "Floristic and forest structural study in Batangtoru Watershed, North Sumatra". Bogor: Perhimpunan Biologi Indonesia, 2017. Artikel.