D. W. Nyairacha, A. W. Wachira, and M. Kerubo, “Effect of Product Prototyping on the Purchase Intention of BJ50 Among 3-Wheeler Tuk-Tuk Users in Laikipia County, Kenya”, journal-of-entrepreneurship-proj, vol. 8, no. 7, pp. 52–63, Nov. 2024.