Christina Soh. (2017). Maths Pupil's Book 1. Marshall Cavendish Education.
Lua i Stíl Chicago (17ú heag.)Christina Soh. Maths Pupil's Book 1. Singapore: Marshall Cavendish Education, 2017.
Lua MLA (9ú heag.)Christina Soh. Maths Pupil's Book 1. Marshall Cavendish Education, 2017.
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