Pfeffermann, G. P., & Madarassy, A. (1991). Trends in private investment in developing countries (1990-91 edition.). World Bank.
Cita Chicago (17th ed.)Pfeffermann, Guy P., i Andrea Madarassy. Trends in Private Investment in Developing Countries. 1990-91 edition. Washington, D.C: World Bank, 1991.
Cita MLA (9th ed.)Pfeffermann, Guy P., i Andrea Madarassy. Trends in Private Investment in Developing Countries. 1990-91 edition. World Bank, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.