APA (7th ed.) Zitazioa

Friedman, E. (1982). Ascent and decline in the world-system. Sage.

Chicago Style (17th ed.) Zitazioa

Friedman, Edward. Ascent and Decline in the World-system. Beverly Hills: Sage, 1982.

MLA (9th ed.) Zitazioa

Friedman, Edward. Ascent and Decline in the World-system. Sage, 1982.