(1997). Government Service Insurance System celebrates its 60th anniversary. IN Editorial [column]. Manila Bulletin.
Chicago Style (17th ed.) Citation"Government Service Insurance System Celebrates Its 60th Anniversary. IN Editorial [column]." Manila Bulletin 1997.
MLA引文"Government Service Insurance System Celebrates Its 60th Anniversary. IN Editorial [column]." Manila Bulletin, 1997.
警告：這些引文格式不一定是100％准確.