Fare, R., & Grosskopf, S. (2004). New directions: Efficiency and productivity. Dordrecht : Kluwer Academic Publishers.
Chicago-čujuhus (17. p.)Fare, Rolf, juo Shawna Grosskopf. New Directions: Efficiency and Productivity. Dordrecht : Kluwer Academic Publishers, 2004.
MLA-čujuhus (9. p.)Fare, Rolf, juo Shawna Grosskopf. New Directions: Efficiency and Productivity. Dordrecht : Kluwer Academic Publishers, 2004.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.