Cita APA (7a ed.)

Kellas, J. G. (1989). The Scottish political system (4th ed.). University Press.

Cita Chicago Style (17a ed.)

Kellas, James G. The Scottish Political System. 4th ed. Cambridge [etc.]: University Press, 1989.

Cita MLA (9a ed.)

Kellas, James G. The Scottish Political System. 4th ed. University Press, 1989.