Lawson, K. (1989). The human polity: An introduction to political science (2nd ed.). Houghton.
Citazione stile Chigago Style (17a edizione)Lawson, Kay. The Human Polity: An Introduction to Political Science. 2nd ed. Dallas: Houghton, 1989.
Citatione MLA (9a ed.)Lawson, Kay. The Human Polity: An Introduction to Political Science. 2nd ed. Houghton, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.