Sina, Ibnu, and Iskandar Zulkarnaen. “MARGALEF INDEX, SIMPSON INDEX AND SHANNON-WEAIVER INDEX CALCULATION FOR DIVERSITY AND ABUDANCE OF BEETLE IN TROPICAL FOREST”. STATMAT: Jurnal Statistika Dan Matematika, vol. 1, no. 2, Aug. 2019, doi:10.32493/sm.v1i2.2948.