"Achatiyum Aadyakaala Pathramaasikakalum" (Printing, Early Newspapers and Magazines). Madhyamangalum Malayalasahithyavum (Media and Malayalam Literature) Kunhukrishnan, K. Sivasankaran, M.K et al. Thiruvananthapuram: State Institute of Languages, 2000.[தெளிவுபடுத்துக]
