Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Friedman, J., & Rowlands, M. (1982). The evolution of social systems (2nd ed.). Duckworth.

Chicago Citation Edition Citation

Friedman, J., und M.J Rowlands. The Evolution of Social Systems. 2nd ed. London: Duckworth, 1982.

MLA Citation Edition Citation

Friedman, J., und M.J Rowlands. The Evolution of Social Systems. 2nd ed. Duckworth, 1982.