G.R.Pillai. (1994). Vanijyaparamaya Kathidapadukal: Commercial correspondance. Kerala Bhasha Institute.
Chicago Edition CitationG.R.Pillai. Vanijyaparamaya Kathidapadukal: Commercial Correspondance. Thiruvananthapuram: Kerala Bhasha Institute, 1994.
MLA Edition CitationG.R.Pillai. Vanijyaparamaya Kathidapadukal: Commercial Correspondance. Kerala Bhasha Institute, 1994.
Warning: These citations may not always be 100% accurate.