Citazione Stile APA (7a Edizione)

Warfield, J. N. (1976). Societal systems: Planning, policy and complexity. ohn Wiley & Sons.

Citazione stile Chigago Style (17a edizione)

Warfield, John N. Societal Systems: Planning, Policy and Complexity. New York ; London ; Sydney ; Toronto: ohn Wiley & Sons, 1976.

Citatione MLA (9a ed.)

Warfield, John N. Societal Systems: Planning, Policy and Complexity. ohn Wiley & Sons, 1976.