CHONG OI MIN and MOHAMMAD TAHIR MAPA, “PENGETAHUAN PELAJAR DAN AMALAN PENGURUSAN SISA PEPEJAL DI SEKOLAH MENENGAH DAERAH PENAMPANG, SABAH: STUDENT KNOWLEDGE AND SOLID WASTE MANAGEMENT PRACTICES IN PENAMPANG DISTRICT SECONDARY SCHOOL, SABAH”, eJK, vol. 27, pp. 21–38, Jun. 2021.