APA
Griliches Z., Conference by National Bureau of Economic Research, . (1984). R & D, patents and productivity. Chicago: Uni of Chicago Pr.
Chicago
Griliches Zvi, Conference by National Bureau of Economic Research, . 1984. R & D, patents and productivity. Chicago: Uni of Chicago Pr.
Harvard
Griliches Z., Conference by National Bureau of Economic Research, . (1984). R & D, patents and productivity. Chicago: Uni of Chicago Pr.
MLA
Griliches Zvi, Conference by National Bureau of Economic Research, . R & D, patents and productivity. Chicago: Uni of Chicago Pr. 1984.