Cita APA

Clarke, G. R. G., Groff, A., Walsh, P. P., Keefer, P., & Beck, T. (1999). New Tools and New Tests in Comparative Political Economy: The Database of Political Institutions. The World Bank.

Citación estilo Chicago

Clarke, George R. G., Alberto Groff, Patrick Paul Walsh, Philip Keefer, y Thorsten Beck. New Tools and New Tests in Comparative Political Economy: The Database of Political Institutions. Washington, D.C: The World Bank, 1999.

Cita MLA

Clarke, George R. G., et al. New Tools and New Tests in Comparative Political Economy: The Database of Political Institutions. The World Bank, 1999.