APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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