Javier, E. Q. (2017). National Scientist Gelia T. Castillo: The scientist with a big heart. Manila Bulletin.
Cita Chicago (17th ed.)Javier, Emil Q. "National Scientist Gelia T. Castillo: The Scientist with a Big Heart." Manila Bulletin 2017.
Cita MLA (9th ed.)Javier, Emil Q. "National Scientist Gelia T. Castillo: The Scientist with a Big Heart." Manila Bulletin, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.