APA (7th ed.) Citation

Isack, A. C. (1981). Scope and methods of political science: An introduction to the methodology (3rd ed.). The Dorsey.

Chicago Style (17th ed.) Citation

Isack, Alan C. Scope and Methods of Political Science: An Introduction to the Methodology. 3rd ed. Homewood, Illinois: The Dorsey, 1981.

MLA (9th ed.) Citation

Isack, Alan C. Scope and Methods of Political Science: An Introduction to the Methodology. 3rd ed. The Dorsey, 1981.