Citazione Stile APA (7a Edizione)

Schaffer, W. A. (1976). On the use of input-output models for regional planning. Martinus Nijhoff.

Citazione stile Chigago Style (17a edizione)

Schaffer, W. A. On the Use of Input-output Models for Regional Planning. Leiden: Martinus Nijhoff, 1976.

Citatione MLA (9a ed.)

Schaffer, W. A. On the Use of Input-output Models for Regional Planning. Martinus Nijhoff, 1976.