United nations. (1990). Trends and development of technical and vocational education. United Nations.
Цитирование в стиле Чикаго (17-е изд.)United nations. Trends and Development of Technical and Vocational Education. Paris: United Nations, 1990.
Цитирование MLA (8-е изд.)United nations. Trends and Development of Technical and Vocational Education. United Nations, 1990.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.