APA

Ball T., Farr J. & Hanson R. L. (1989). Political innovation and conceptual change. Cambridge (Inglaterra): Cambridge University Press.

Chicago

Ball Terence, Farr James and Hanson Russell L. 1989. Political innovation and conceptual change. Cambridge (Inglaterra): Cambridge University Press.

Harvard

Ball T., Farr J. and Hanson R. L. (1989). Political innovation and conceptual change. Cambridge (Inglaterra): Cambridge University Press.

MLA

Ball Terence, Farr James and Hanson Russell L. Political innovation and conceptual change. Cambridge (Inglaterra): Cambridge University Press. 1989.