Diyasena, W. (1976). Pre-vocational education in Sri Lanka. Unesco Press.
芝加哥风格引文Diyasena, W. Pre-vocational Education in Sri Lanka. Paris: Unesco Press, 1976.
MLA引文Diyasena, W. Pre-vocational Education in Sri Lanka. Unesco Press, 1976.
警告：这些引文格式不一定是100％准确.