Julia Burchell. (2020). Cambridge Lower Secondary English Stage 9: Teacher's Guide. Harper Collins.
Chicago-čujuhus (17. p.)Julia Burchell. Cambridge Lower Secondary English Stage 9: Teacher's Guide. London: Harper Collins, 2020.
MLA-čujuhus (9. p.)Julia Burchell. Cambridge Lower Secondary English Stage 9: Teacher's Guide. Harper Collins, 2020.
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