APA
Piehl A. M., Williams Geoffrey & National Bureau Of Economic Research. (2010). Institutional Requirements for Effective Imposition of Fines. Cambridge: NBER.
Chicago
Piehl Anne Morrison, Williams Geoffrey and National Bureau Of Economic Research. 2010. Institutional Requirements for Effective Imposition of Fines. Cambridge: NBER.
Harvard
Piehl A. M., Williams Geoffrey and National Bureau Of Economic Research. (2010). Institutional Requirements for Effective Imposition of Fines. Cambridge: NBER.
MLA
Piehl Anne Morrison, Williams Geoffrey and National Bureau Of Economic Research. Institutional Requirements for Effective Imposition of Fines. Cambridge: NBER. 2010.