Riduwan text Bandung CV Alfabeta 2020 Cet. 10 id x, 244 p.: ill.; 2021 metode penelitian 303.1 979-8433-16-8 250804 20250804104733 INLIS000000000004215 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)