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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিWorld Health Organization, Regional Office for South-East Asia. Adolescent Pregnancy Situation in South-East Asia Region. New Delhi: World Health Organization, Regional Office for South-East Asia, 2014.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিWorld Health Organization, Regional Office for South-East Asia. Adolescent Pregnancy Situation in South-East Asia Region. World Health Organization, Regional Office for South-East Asia, 2014.
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