Παραπομπή σε μορφή APA (7η εκδ.)

Isard, W., & Smith, C. (1990). Location analysis and general theory: Economic, Political, Regional and Dynamic. New York University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Isard, Walter, και Charles Smith. Location Analysis and General Theory: Economic, Political, Regional and Dynamic. New York: New York University Press, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Isard, Walter, και Charles Smith. Location Analysis and General Theory: Economic, Political, Regional and Dynamic. New York University Press, 1990.