APA

Alt J. E., Shepsle K. A., Ordeshook P. C., Bates R. H., Milgrom P., Roberts J., kreps D. M., Demsetz H., Riker W. H., North D. C., Tullock G. & Olson M. (1990). Perspectives on positive political economy. Cambridge (Inglaterra): Cambridge University Press.

Chicago

Alt James E, Shepsle Kenneth A, Ordeshook Peter C, Bates Robert H, Milgrom Paul, Roberts John, kreps David M, Demsetz Harold, Riker William H, North Douglass C, Tullock Gordon and Olson Mancur. 1990. Perspectives on positive political economy. Cambridge (Inglaterra): Cambridge University Press.

Harvard

Alt J. E., Shepsle K. A., Ordeshook P. C., Bates R. H., Milgrom P., Roberts J., kreps D. M., Demsetz H., Riker W. H., North D. C., Tullock G. and Olson M. (1990). Perspectives on positive political economy. Cambridge (Inglaterra): Cambridge University Press.

MLA

Alt James E, Shepsle Kenneth A, Ordeshook Peter C, Bates Robert H, Milgrom Paul, Roberts John, kreps David M, Demsetz Harold, Riker William H, North Douglass C, Tullock Gordon and Olson Mancur. Perspectives on positive political economy. Cambridge (Inglaterra): Cambridge University Press. 1990.