General Centificate of Secondary Education & Suffolk. County Council. Co-ordinated science lesson notes: Chemistry. Collins Educational.
Цитирование в стиле Чикаго (17-е изд.)General Centificate of Secondary Education и Suffolk. County Council. Co-ordinated Science Lesson Notes: Chemistry. London: Collins Educational.
Цитирование MLA (9-е изд.)General Centificate of Secondary Education и Suffolk. County Council. Co-ordinated Science Lesson Notes: Chemistry. Collins Educational.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.