(1999). Twilight years: What it really means to be old. Manila Times.
Citazione stile Chigago Style (17a edizione)"Twilight Years: What It Really Means to Be Old." Manila Times 1999.
Citatione MLA (9a ed.)"Twilight Years: What It Really Means to Be Old." Manila Times, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.