Amery, J., & Riley, P. (2021). Cambridge Checkpoint Lower Secondary Science Teacher's Guide 7 with Boost Subscription (1st.). Hodder Education.
Chicago-čujuhus (17. p.)Amery, Judith, juo Peter Riley. Cambridge Checkpoint Lower Secondary Science Teacher's Guide 7 with Boost Subscription. 1st. London: Hodder Education, 2021.
MLA-čujuhus (9. p.)Amery, Judith, juo Peter Riley. Cambridge Checkpoint Lower Secondary Science Teacher's Guide 7 with Boost Subscription. 1st. Hodder Education, 2021.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.