Kramer, R. M. (1969). Participation of the poor: Comparative community case studies in the war on poverty. New Jersey: Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Kramer, Ralph M. Participation of the Poor: Comparative Community Case Studies in the War on Poverty. New Jersey: Prentice Hall, 1969.
Lua MLA (8ú heag.)Kramer, Ralph M. Participation of the Poor: Comparative Community Case Studies in the War on Poverty. New Jersey: Prentice Hall, 1969.
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