de Haan, C. (1992). The livestock sector in Eastern Europe: Constraints and opportunities. World Bank.
Cita Chicago (17th ed.)de Haan, Cornelis. The Livestock Sector in Eastern Europe: Constraints and Opportunities. Washington, D.C: World Bank, 1992.
Cita MLA (9th ed.)de Haan, Cornelis. The Livestock Sector in Eastern Europe: Constraints and Opportunities. World Bank, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.