Brown, H., Prisuta, R., Jacobs, B., & Campbell, A. (1996). Literacy of older adults in America. National Center for Education Statistics.
Chicago-viite (17. p.)Brown, Helen, Robert Prisuta, Bella Jacobs, ja Anne Campbell. Literacy of Older Adults in America. Washington, D.C: National Center for Education Statistics, 1996.
MLA-viite (9. p.)Brown, Helen, et al. Literacy of Older Adults in America. National Center for Education Statistics, 1996.
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