Great Britain. Schools Council. Project in Secondary School Mathematics. (1971). Mathematical pattern. Chatto & Windus for the Schools Council.
Lua i Stíl Chicago (17ú heag.)Great Britain. Schools Council. Project in Secondary School Mathematics. Mathematical Pattern. London: Chatto & Windus for the Schools Council, 1971.
Lua MLA (9ú heag.)Great Britain. Schools Council. Project in Secondary School Mathematics. Mathematical Pattern. Chatto & Windus for the Schools Council, 1971.
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