Cita APA (7th ed.)

Isard, W., & Cumberland, J. (1960). Regional Economic Pianning. Techniques of Analysis for less developed areas: наукове видання.

Cita Chicago (17th ed.)

Isard, Walter, i JohnH Cumberland. Regional Economic Pianning. Techniques of Analysis for Less Developed Areas: наукове видання. 1960.

Cita MLA (9th ed.)

Isard, Walter, i JohnH Cumberland. Regional Economic Pianning. Techniques of Analysis for Less Developed Areas: наукове видання. 1960.