APA (7th ed.) Citation

Young, O. R. (1968). Systems of political science. Prentice-Hall.

Chicago Style (17th ed.) Citation

Young, Oran R. Systems of Political Science. Englewood Cliffs: Prentice-Hall, 1968.

MLA (9th ed.) Citation

Young, Oran R. Systems of Political Science. Prentice-Hall, 1968.