Παραπομπή σε μορφή APA (7η εκδ.)

Isard, W. (1969). General theory: Social, political, economic, and regional with particular reference to decision-making analysis. MIT Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Isard, Walter. General Theory: Social, Political, Economic, and Regional with Particular Reference to Decision-making Analysis. Cambridge: MIT Press, 1969.

Παραπομπή σε μορφή MLA (8th εκδ.)

Isard, Walter. General Theory: Social, Political, Economic, and Regional with Particular Reference to Decision-making Analysis. MIT Press, 1969.