- ^ a b c d "Top 10 Modus Operandi of the most common Crimes in Manila and other areas in the Philippines". National Capital Region Police Office (NCRPO). September 9, 2016. Retrieved September 9, 2016.
- ^ "PNP Discussed Recent Martilyo Gang Mall Attack". EagleNews.ph. December 16, 2013. Archived from the original on October 6, 2014. Retrieved February 3, 2014.
- ^ Mercusio, Laram. "Waray-Waray Gangs: Philippine's Most Dangerous Gangsters". Medium. August 1, 2020
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