General Centificate of Secondary Education & Suffolk. County Council. Co-ordinated science lesson notes: Chemistry. Collins Educational.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeneral Centificate of Secondary Education और Suffolk. County Council. Co-ordinated Science Lesson Notes: Chemistry. London: Collins Educational.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGeneral Centificate of Secondary Education और Suffolk. County Council. Co-ordinated Science Lesson Notes: Chemistry. Collins Educational.
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