Gorrall, Brittany K., Jacob Curtis, Todd Daniel Little, and Pavel Panko. “Innovations in Measurement: Visual Analog Scales and Retrospective Pretest Self-Report Designs”. Actualidades en Psicología 30, no. 120 (June 27, 2016): 1–6. Accessed May 3, 2024. https://www.revistas.ucr.ac.cr/index.php/actualidades/article/view/22932.