Narayanan Nair, K. R. (1977). Vanijya saamkhyikam (m). State Institute of Languages.
Chicago Edition CitationNarayanan Nair, K R. Vanijya Saamkhyikam (m). TVPM: State Institute of Languages, 1977.
MLA Edition CitationNarayanan Nair, K R. Vanijya Saamkhyikam (m). State Institute of Languages, 1977.
Warning: These citations may not always be 100% accurate.