Siton, C. S., Bao, S. C., Rejas, A. M., Cabang, B. A., & Culajara, C. L. B. (2025). Comparing Writing Speed and Quantity with Sign Pens and Ballpoint Pens: An Experimental Analysis. American Journal of Human Psychology, 3(1), 14-19. https://doi.org/10.54536/ajhp.v3i1.4190