Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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