Siregar, Etti Sartina, Nunik S. Ariyanti, and Sri S. Tjitrosoedirdjo. “The Liverwort Genus Marchantia (Marchantiaceae) of Mount Sibayak North Sumatra, Indonesia”. BIOTROPIA 20, no. 2 (February 27, 2014). Accessed July 16, 2024. https://journal.biotrop.org/index.php/biotropia/article/view/327.