1. Fava, J. A., Denison, R., Jones, B., et al. (Eds.). (1991). A technical framework for life-cycle assessments (p. 134). SETAC.
2. Franklin Associates, Ltd. (1992). Energy and environmental profile analysis of children’s single use and cloth diapers (p. 114). Franklin Associates, Ltd..
3. Johnson, B. W. (1994). Inventory of land management inputs for producing absorbent Fiber for diapers: A comparison of cotton and softwood land management. Forest Prod. J., 44(6), 39–45.
4. Kirkpatrick, N. (1999). Life cycle assessment. Retrieved 12/21/99 from http://www.wrfound.org.uk/previous/WB47-LCA.html.
5. LeVan, S. L., (1995). Life Cycle Assessment: Measuring Environmental Impact. Presented at the 49th Annual Meeting of the Forest Products Society, Portland, Oregon, June, pp. 7–16.