APA
Jaffe A. B., Trajtenberg Manuel & National Bureau Of Economic Research. (1996). Flows of knowledge from universities and federal labs: modeling the flow of patent citations over time and across institutional and geographic boundaries. Cambridge, MA: NBER.
Chicago
Jaffe Adam B, Trajtenberg Manuel and National Bureau Of Economic Research. 1996. Flows of knowledge from universities and federal labs: modeling the flow of patent citations over time and across institutional and geographic boundaries. Cambridge, MA: NBER.
Harvard
Jaffe A. B., Trajtenberg Manuel and National Bureau Of Economic Research. (1996). Flows of knowledge from universities and federal labs: modeling the flow of patent citations over time and across institutional and geographic boundaries. Cambridge, MA: NBER.
MLA
Jaffe Adam B, Trajtenberg Manuel and National Bureau Of Economic Research. Flows of knowledge from universities and federal labs: modeling the flow of patent citations over time and across institutional and geographic boundaries. Cambridge, MA: NBER. 1996.