Ardiyana Pertiwi, Johannes P. Kumagaya and Irene Brainnita Oktarin 2025. The Effect of Product Innovation on Purchasing Decisions for Custom T-shirts with Quality as a Moderating Variable (Study on Sarkastem Lampung Tengah). International Journal of Business, Marketing, Economics & Leadership (IJBMEL). 2, 2 (May 2025), 11–16. DOI:https://doi.org/10.70142/ijbmel.v2i2.314.