Ranaprathapan,K S, & Translator. (1990). Ganitham 4. State institute of languages.
Čikaški stil citiranjaRanaprathapan,K S, i Translator. Ganitham 4. Trivandrum: State institute of languages, 1990.
MLA način citiranjaRanaprathapan,K S, i Translator. Ganitham 4. State institute of languages, 1990.
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