Akbar, Muhammad, AND 		Rustam, Rusli.
" Test Some Concentrations of Tuba Root Extract (Derris elliptica Benth) to Control Horn Beetle Larvae (Oryctes rhinoceros Linnaeus) on Palm Oil Plant" <em>Jurnal Proteksi Tanaman</em> [Online], Volume 3 Number 2 (9 December 2019)