IEA Coal Research. (1989). The Problems of sulphur. Published by Butterworths on behalf of IEA Coal Research.
Цитирование в стиле Чикаго (17-е изд.)IEA Coal Research. The Problems of Sulphur. London ; Boston: Published by Butterworths on behalf of IEA Coal Research, 1989.
Цитирование MLA (9-е изд.)IEA Coal Research. The Problems of Sulphur. Published by Butterworths on behalf of IEA Coal Research, 1989.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.