Hahn, R. W. (1989). A primer on environmental policy design. Harwood Academic Pub.
Citazione stile Chigago Style (17a edizione)Hahn, Robert W. A Primer on Environmental Policy Design. Chur: Harwood Academic Pub, 1989.
Citatione MLA (9a ed.)Hahn, Robert W. A Primer on Environmental Policy Design. Harwood Academic Pub, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.