(1999). Twilight years: What it really means to be old. Manila Times.
Chicago-referens (17:e uppl.)"Twilight Years: What It Really Means to Be Old." Manila Times 1999.
MLA-referens (9:e uppl.)"Twilight Years: What It Really Means to Be Old." Manila Times, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.