Non-Latin script reference not evaluated.

Poverty and growth in Kenya, 1980: t.p. (Paul Collier; consultant to Eastern African Regional Office of World Bank)

Jackson, J.C. Incomes, poverty, and food ... 1988: t.p. (P. Collier)

Appleton, S. Gender, education, and employment in Côte d'Ivoire, 1990: CIP t.p. (Paul Collier) data sheet (b. Apr. 23, 1949)

Adagt u̇ldsėn tėrbum, 2009: t.p. (Пол Коллиер = Pol Kollier) Engl. t.p. (Paul Collier)

Wikipedia Web Page, viewed 12/11/2014 (Paul Collier is a Professor of Economics and Public Policy at the University of Oxford and Director of the International Growth Centre) http://en.wikipedia.org/wiki/Paul_Collier