Organisation for Economic Co-operation and Development, P. (1978). Steam coal: Prospects to 2000. OECD.
Цитирование в стиле Чикаго (17-е изд.)Organisation for Economic Co-operation and Development, Paris. Steam Coal: Prospects to 2000. OECD, 1978.
Цитирование MLA (9-е изд.)Organisation for Economic Co-operation and Development, Paris. Steam Coal: Prospects to 2000. OECD, 1978.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.