Bantigue, I. K. F., and A. V. . de Viana. “The Emergence of Hardiness: The Hoodlums and Gangs in Tondo, Manila from 1960 to1980”. Silliman Journal, vol. 66, no. 1, July 2025, https://sillimanjournal.su.edu.ph/index.php/sj/article/view/633.