Source: http://www.abdulkalam.com/kalam/jsp/display_content.jsp?menuid=28&menuname=Speeches%20/%20 Lectures&linkid=68&linkname=Recent&content=1975&columnno=0&starts=0&menu_image=-&contentsForum= Address%20at%20the%2035th%20Chennai%20Book%20Fair%20organized%20by%20the%20BAPASI%20 (The%20Book%20Sellers%20and%20Publishers%20Association%20of%20South%20India)&titlename=null