Cita APA (7th ed.)

Harrison, H. V. (1964). The role of theory in international relations. D. van Nostrand.

Cita Chicago (17th ed.)

Harrison, Horace V. The Role of Theory in International Relations. Princeton: D. van Nostrand, 1964.

Cita MLA (9th ed.)

Harrison, Horace V. The Role of Theory in International Relations. D. van Nostrand, 1964.