Cita APA (7th ed.)

Leiserson, A., Garceau, O., & Key, V. O. (1968). Political research and political theory. Harvard University Press.

Cita Chicago (17th ed.)

Leiserson, Avery, Oliver Garceau, i Valdimar Orlando Key. Political Research and Political Theory. Cambridge: Harvard University Press, 1968.

Cita MLA (9th ed.)

Leiserson, Avery, et al. Political Research and Political Theory. Harvard University Press, 1968.