(1999). Twilight years: What it really means to be old. Manila Times.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Twilight Years: What It Really Means to Be Old." Manila Times 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Twilight Years: What It Really Means to Be Old." Manila Times, 1999.
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