Amery, J., & Riley, P. (2021). Cambridge Checkpoint Lower Secondary Science Teacher's Guide 7 with Boost Subscription (1st.). Hodder Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmery, Judith, और Peter Riley. Cambridge Checkpoint Lower Secondary Science Teacher's Guide 7 with Boost Subscription. 1st. London: Hodder Education, 2021.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmery, Judith, और Peter Riley. Cambridge Checkpoint Lower Secondary Science Teacher's Guide 7 with Boost Subscription. 1st. Hodder Education, 2021.
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