1. Chandna, R.C (1967) Female working force of Rural Punjab, 1961,” Man Power, Vol.11. No.4 .
2. Clark, John 1. (1972) Population Geography, Pergamon Press, oxford.
3. Gosab G.S. (1982) “Recent Population Growth in India, “Population Geography, Vol, 4. PP. 33-53.
4. Gosal, G.S. (1961) “the Regionalism in Sex Composition of India’s Population.” Rural Sociology Vol.26.
5. Wunsch. G.J and Termote, M.K (1978) Introduction to Demographic Analysis Principles and Methods, Plenum Press, New York.
6. Census of India (1971) Indian Census in Perspective, Officer of the Registrar General, Government of India.
7. Franklin, S.H (1956) “The pattern of Sex Ratio in New Zealand,” Economic Geographic, Vol.32
8. Robenson, W.C (1964) “The Development of Modern Population Theory, American Jouranal of Economic and Sociology, Vol. 23, No.4, P. 384.
9. Sterw, Curt (198), “Principles of Human Geneties” Eurasia Publishing House, New Delhi P.429.
10. Trewartha, G.T. (1953) “ A case for Population Geography” Anuals of the Association of American Geographers, Vol. 43.
11. Krishan, G and Chandna, R.C (1973) “Sex Composition of Haryana’s Population, Geographical Review of India. June .
12. Clark, John.I (1960) “Rural and Urban Sex Ratio in England and Wales”. Tijdschift yoor Economische on Social Geographie, Feb.