Cita APA (7th ed.)

Villegas, B. M. (2001). The crisis of childless societies. Manila Bulletin.

Cita Chicago (17th ed.)

Villegas, Bernardo M. "The Crisis of Childless Societies." Manila Bulletin 2001.

Cita MLA (9th ed.)

Villegas, Bernardo M. "The Crisis of Childless Societies." Manila Bulletin, 2001.