Walean, Ronny Hansje, and Deny Indra Pratama. 2024. “Impact of Product Quality, Price, and Promotional Activities on Consumer’s Purchase Decision on a Non-Subsidized NPK Fertilizer Market Leading Brand: Purchase Interest As a Mediator”. Daengku: Journal of Humanities and Social Sciences Innovation 4 (4):667-77. https://doi.org/10.35877/454RI.daengku2685.