Eijffinger, S. C. W., & Huizinga, H. (1998). Positive political economy: Theory and evidence. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Eijffinger, Sylvester C. W., agus Harry Huizinga. Positive Political Economy: Theory and Evidence. Cambridge ; New York: Cambridge University Press, 1998.
Lua MLA (9ú heag.)Eijffinger, Sylvester C. W., agus Harry Huizinga. Positive Political Economy: Theory and Evidence. Cambridge University Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.