Howard, E. W. (1969). Chemicals from nature. Published for the Nuffield Foundation by the Longmans/Penguin Books.
Цитирование в стиле Чикаго (17-е изд.)Howard, E. W. Chemicals from Nature. London: Published for the Nuffield Foundation by the Longmans/Penguin Books, 1969.
Цитирование MLA (9-е изд.)Howard, E. W. Chemicals from Nature. Published for the Nuffield Foundation by the Longmans/Penguin Books, 1969.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.