Chandratreya, M. (1963). Elementary co-ordinate Geometry (11th.). M. L. Chandratreya.
Lua i Stíl Chicago (17ú heag.)Chandratreya, M. Elementary Co-ordinate Geometry. 11th. Poona: M. L. Chandratreya, 1963.
Lua MLA (9ú heag.)Chandratreya, M. Elementary Co-ordinate Geometry. 11th. M. L. Chandratreya, 1963.
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