Yunior, K., Calvin Chang, Kangga Ega Williyandi, Ivan Leonardo Salim and Lisa Anwar 2021. Effect of Promotion, Price and Product Quality Toward Buying Decision . Jurnal Mantik. 5, 1 (Apr. 2021), 109-115. DOI:https://doi.org/10.35335/mantik.Vol5.2021.1281.pp109-115.