Cita APA (7a ed.)

Shannon, T. R. An introduction to the world-system perspective (2.). Westview Press.

Cita Chicago Style (17a ed.)

Shannon, Thomas R. An Introduction to the World-system Perspective. 2. Colorado: Westview Press.

Cita MLA (9a ed.)

Shannon, Thomas R. An Introduction to the World-system Perspective. 2. Westview Press.