"Earthquake Information NO.: 3". Philippine Institute of Volcanology and Seismology. Archived from the original on April 23, 2019. Retrieved April 23, 2019.
"Earthquake Information NO.: 3". Philippine Institute of Volcanology and Seismology. Archived from the original on April 23, 2019. Retrieved April 23, 2019.
At 0:39 of video, the earthquake hits at CCTV timestamp 05:07:21 before losing the live transmission at 05:07:28. "Pagguho ng Chuzon supermarket". News5. Retrieved April 26, 2019 – via YouTube.
"Pagguho ng supermarket sa Porac, Pampanga iniimbestigahan". ABS-CBN News. Retrieved April 23, 2019 – via YouTube. (0:01- ) "Apat na taon pa lamang nakatayo ang gusali ng Chuzon Supermarket sa mismong bayan ng Porac, Pampanga." / (1:54- ) "Pinasususpendi na ng DILG sa mga lokal na pamahalaan ang lahat ng business permits ng mga sangay ng Chuzon Supermarket."