AzizahS. N., SimanjuntakM., and MuflikhatiI. “CONSUMER COMPLAINT BEHAVIOUR IN INDONESIA: ROLE OF KNOWLEDGE AND SELF-CONFIDENCE ”. Jurnal Ilmu Keluarga & Konsumen, Vol. 15, no. 1, Feb. 2022, pp. 90-101, doi:10.24156/jikk.2022.15.1.90.