United nations. (2002). Distance education at secondary level in India: The national open school. UN.
Цитирование в стиле Чикаго (17-е изд.)United nations. Distance Education at Secondary Level in India: The National Open School. Paris: UN, 2002.
Цитирование MLA (8-е изд.)United nations. Distance Education at Secondary Level in India: The National Open School. UN, 2002.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.