1. Health and reproductive status of female workers in dry cleaning shops
2. Bureau of the Census (1982): “1980 Census of population: Classified Index of Industries and Occupations.” Washington DC: U.S. Department of Commerce Publication No. PHC80-R4 (final edition).
3. National Center for Health Statistics (1988): “Health Promotion and Disease Prevention United States, 1985.” Washington DC: Series 10, No. 163, DHHS Publication No. 88–1591.