MAULIDAH, M.; WINDU GATA; RIZKI AULIANITA; CUCU IKA AGUSTYANINGRUM. DECISION TREE CLASSIFICATION ALGORITHM FOR RECOMMENDED BOOKS BY BOOK CATEGORY. E-Bisnis : Jurnal Ilmiah Ekonomi dan Bisnis, v. 13, n. 2, p. 89 - 96, 4 Dec. 2020.