Villanueva, R. . E., & Ong, G. (2021). Mayors reviewing policy on outdoor activities for kids. Philippine Star.
Chicago-viite (17. p.)Villanueva, Ralph Edwin, ja Ghio Ong. "Mayors Reviewing Policy on Outdoor Activities for Kids." Philippine Star 2021.
MLA-viite (9. p.)Villanueva, Ralph Edwin, ja Ghio Ong. "Mayors Reviewing Policy on Outdoor Activities for Kids." Philippine Star, 2021.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.