Cita APA (7th ed.)

Hopkins, T. K., & Wallerstein, I. (1980). Processes of the world-system. SAGE Publications.

Cita Chicago (17th ed.)

Hopkins, Terence K., i Immanuel Wallerstein. Processes of the World-system. Beverly Hills: SAGE Publications, 1980.

Cita MLA (9th ed.)

Hopkins, Terence K., i Immanuel Wallerstein. Processes of the World-system. SAGE Publications, 1980.