Aubrey, H. G., & Darmstadter, J. (1961). Introduct: Economic challenge and response. National Planning Association.
Citazione stile Chigago Style (17a edizione)Aubrey, Henry G., e Joel Darmstadter. Introduct: Economic Challenge and Response. Washington: National Planning Association, 1961.
Citatione MLA (9a ed.)Aubrey, Henry G., e Joel Darmstadter. Introduct: Economic Challenge and Response. National Planning Association, 1961.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.