APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.