Παραπομπή APA

Tolley,George S, & Thomas,Vinod. (1982). Agricultural price policies and the developing countries. Johns Hopkins.

Παραπομπή Chicago Style

Tolley,George S, και Thomas,Vinod. Agricultural Price Policies and the Developing Countries. Baltimore: Johns Hopkins, 1982.

Παραπομπή MLA

Tolley,George S, και Thomas,Vinod. Agricultural Price Policies and the Developing Countries. Johns Hopkins, 1982.