Muharni, Muharni, 		Gunanda, Fadhilla, 		Rahman, Suci, 		Yohandi, Heni, AND 		Julinar, Julinar.
" Triterpenoid  betulinaldehyde and betulinic acid from  the stem bark of Dillenia ochreata (Miq.) Teijsm. &amp; Binn. ex Martelli" <em>Molekul</em> [Online], Volume 21 Number 2 (20 July 2026)