U.S.Government definition - A family is counted as poor if its pretax money income is below its poverty threshold. Money income does not include noncash benefits such as public housing, Medicaid, employer-provided health insurance and food stamps. The 2012 HHS poverty guideline is $11,170 for an individual or $23,050 for a family of four.
United Nations definition - Fundamentally, poverty is a denial of choices and opportunities, a violation of human dignity. It means lack of basic capacity to participate effectively in society. It means not having enough to feed and clothe a family, not having a school or clinic to go to, not having the land on which to grow one’s food or a job to earn one’s living, not having access to credit. It means insecurity, powerlessness and exclusion of individuals, households and communities. It means susceptibility to violence, and it often implies living in marginal or fragile environments, without access to clean water or sanitation.
Extreme Poverty - World Bank defines extreme poverty as living on less than $1.25(US) per day.
Eradicating Extreme Poverty: Democracy, Globalization and Human Rights edited by Xavier Godinot MAIN Library HC 59.72 .P6 E7313 2012
So Rich So Poor: Why It's So Hard to End Poverty in America Peter Edelman MAIN Library HC 110 .P6 E34 2012
World Poverty and Human Rights: Cosmopolitan Responsibilities and Reform 2nd ed. Thomas Pogge MAIN Library JC 571 .P577 2008
See also the suggested annotated references on Poverty from Oxford Bibliographies Online. Search using keywords like "poverty".
Columbia International Affairs Online (CIAO). Indexes and selectively publishes post-1990 scholarship and reports on international affairs. Provides full-text access to relevant Columbia University Press titles and many recent journals, papers from university research institutes and non-governmental organizations, foundation-funded research projects, and conference proceedings. CIAO also has links to international affairs centers, institutes, and other resources; U.S., international, and foreign government sites; environmental studies web pages; and news media services.
EconLit - covers more than 400 economics journals plus dissertations in the field.
Political Science Complete. Provides full text for over 500 publications, and cover-to-cover indexing and abstracts for more than 1995 journals. The database also features more than 189 full-text reference books and monographs, and over 27,000 full text conference papers, including those of the International Political Science Association.
Center on Budget and Policy Priorities - focuses research and policy on low and moderate income
Economic Research Center, United States Department of Agriculture (ERC) - covers rural poverty in the U.S.
Eldis Poverty Research - from the Institute of Development Studies, Sussex a knowledge service with more than 26,000 full-text documents
Institute for Research on Poverty - covers U.S. poverty with emphasis on the Midwest
Joint Center for Poverty Research (JCPR) - Housed at Northwestern and University of Chicago focuses on US
National Poverty Center (NPC) Housed at University of Michigan focuses on policy responses
PolicyFile - database of research and policy briefs from hundreds of think tanks (mostly U.S. based)