APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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