vihangi Gayan_Lakshika https://shortnotesol.weebly.com/business-and-accounting-studies.html http://www.nie.lk/pdffiles/tg/e11tim156.pdf https://www.youtube.com/watch?v=VViyTjNoBUQ https://www.edulanka.lk/download-center/ol/221-business-and-accounting https://www.e-thaksalawa.moe.gov.lk/moodle/course/view.php?id=619 https://www.e-thaksalawa.moe.gov.lk/moodle/course/view.php?id=841 refer the above links
