APA
Ravallion M., Living Standards Measurement Study Lsms, . (1998). Poverty lines in theory and practice. Washigton: World Bank.
Chicago
Ravallion Martin, Living Standards Measurement Study Lsms, . 1998. Poverty lines in theory and practice. Washigton: World Bank.
Harvard
Ravallion M., Living Standards Measurement Study Lsms, . (1998). Poverty lines in theory and practice. Washigton: World Bank.
MLA
Ravallion Martin, Living Standards Measurement Study Lsms, . Poverty lines in theory and practice. Washigton: World Bank. 1998.