Não informado. (1984). Education for Health. World Health Organization, Division of Public Information and Education.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Education for Health. Geneva, Suíça: World Health Organization, Division of Public Information and Education, 1984.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Education for Health. World Health Organization, Division of Public Information and Education, 1984.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.