APA
Ke B., Shackelford Douglas A, Petroni Kathy R & National Bureau Of Economic Research. (1999). The impact of state taxes on self-insurance. Cambridge, MA: NBER.
Chicago
Ke Bin, Shackelford Douglas A, Petroni Kathy R and National Bureau Of Economic Research. 1999. The impact of state taxes on self-insurance. Cambridge, MA: NBER.
Harvard
Ke B., Shackelford Douglas A, Petroni Kathy R and National Bureau Of Economic Research. (1999). The impact of state taxes on self-insurance. Cambridge, MA: NBER.
MLA
Ke Bin, Shackelford Douglas A, Petroni Kathy R and National Bureau Of Economic Research. The impact of state taxes on self-insurance. Cambridge, MA: NBER. 1999.