Chris Pearce. (2018). Cambridge IGCSE Maths Student's Book. HarperCollins.
Lua i Stíl Chicago (17ú heag.)Chris Pearce. Cambridge IGCSE Maths Student's Book. London: HarperCollins, 2018.
Lua MLA (9ú heag.)Chris Pearce. Cambridge IGCSE Maths Student's Book. HarperCollins, 2018.
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