Ranaprathapan,K S, & Translator. (1990). Ganitham 4. State institute of languages.
Dyfyniad Arddull ChicagoRanaprathapan,K S, and Translator. Ganitham 4. Trivandrum: State institute of languages, 1990.
Dyfyniad MLARanaprathapan,K S, and Translator. Ganitham 4. State institute of languages, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.