Saputra, Andika Dwi, Sri Hartini, and Ratna Purwaningsih. 2026. “Assessment of Public Intention in Polyethylene Terephthalate (PET) Plastic Bottle Waste Sorting in Yogyakarta Using the Theory of Planned Behavior With a Deposit Refund System Scheme”. Indonesian Journal of Innovation and Applied Sciences (IJIAS) 6 (2):196-213. https://doi.org/10.47540/ijias.v6i2.2773.