Dyfyniad APA

Isaac, . N. B. (2007). 50th anniversary of the Social Security System. Manila Bulletin.

Dyfyniad Arddull Chicago

Isaac, Norman B. "50th Anniversary of the Social Security System." Manila Bulletin 2007.

Dyfyniad MLA

Isaac, Norman B. "50th Anniversary of the Social Security System." Manila Bulletin, 2007.

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