APA aipamena

Alt,James.E. (1990). Perspectives on positive political economy. Cambridge University Press.

Chicago Style aipamena

Alt,James.E. Perspectives on Positive Political Economy. Cambridge: Cambridge University Press, 1990.

MLA aipamena

Alt,James.E. Perspectives on Positive Political Economy. Cambridge University Press, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.