Griliches, Z. (1984). R & D, patents, and productivity. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Griliches, Zvi. R & D, Patents, and Productivity. Chicago: University of Chicago Press, 1984.
Lua MLA (9ú heag.)Griliches, Zvi. R & D, Patents, and Productivity. University of Chicago Press, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.