APA
Grossman G., Helpman E & National Bureau Of Economic Research. (1994). Foreign Investment With Endogenous Protection. Cambridge, MA: NBER.
Chicago
Grossman Gene, Helpman E and National Bureau Of Economic Research. 1994. Foreign Investment With Endogenous Protection. Cambridge, MA: NBER.
Harvard
Grossman G., Helpman E and National Bureau Of Economic Research. (1994). Foreign Investment With Endogenous Protection. Cambridge, MA: NBER.
MLA
Grossman Gene, Helpman E and National Bureau Of Economic Research. Foreign Investment With Endogenous Protection. Cambridge, MA: NBER. 1994.