Santosa, J., Sahila, S., Kartika, R. N., Aditama, R., Maulana, M. I., Pratama, M. R., & Musthofa. (2026). Development of a Desk Calendar Made from Recycled Paper with Butterfly Pea Flower as a Natural and Eco-Friendly Material. Jurnal Teknik Industri Dan Manajemen Rekayasa, 4(1), 15–27. https://doi.org/10.24002/jtimr.v4i1.13714