MAHESH, S. (2016). I DID IT MATHEMATICS - REVISIED EDITION - BOOK 4. CAMBRIDGE UNIVERSITY PRESS.
Lua i Stíl Chicago (17ú heag.)MAHESH, SUDHA. I DID IT MATHEMATICS - REVISIED EDITION - BOOK 4. DELHI: CAMBRIDGE UNIVERSITY PRESS, 2016.
Lua MLA (9ú heag.)MAHESH, SUDHA. I DID IT MATHEMATICS - REVISIED EDITION - BOOK 4. CAMBRIDGE UNIVERSITY PRESS, 2016.
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