Chourdhury, P. A. (1999). Basic services designed to promote self-reliance. Philippine Star.
Chicago-referens (17:e uppl.)Chourdhury, Perla Aragon. "Basic Services Designed to Promote Self-reliance." Philippine Star 1999.
MLA-referens (9:e uppl.)Chourdhury, Perla Aragon. "Basic Services Designed to Promote Self-reliance." Philippine Star, 1999.
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