Ekanayaka, Anula කාර්යමූලික පර්යේෂණ ක්රමවේදය = Action Research Methodology - Kottawa: Sara Publication, 2018. - 95 p.; 22 cm ISBN: 9789555846363 Subjects--Topical Terms: Education and Research in Technology. Dewey Class. No.: 001.42 / EKA