APA (7th ed.) Citation

Barry, N. P. (1981). An introduction to modern political: Theory. Macmillan Education.

Chicago Style (17th ed.) Citation

Barry, Norman P. An Introduction to Modern Political: Theory. London: Macmillan Education, 1981.

MLA (9th ed.) Citation

Barry, Norman P. An Introduction to Modern Political: Theory. Macmillan Education, 1981.