Sehgal, J. M. (1986). An introduction to techniques of population and labour force projections. International Labour Office.
芝加哥风格引文Sehgal, Jag Mohan. An Introduction to Techniques of Population and Labour Force Projections. Geneva: International Labour Office, 1986.
MLA引文Sehgal, Jag Mohan. An Introduction to Techniques of Population and Labour Force Projections. International Labour Office, 1986.
警告：这些引文格式不一定是100％准确.