APA
Hamermesh D. S., Parker Amy M & National Bureau Of Economic Research. (2003). Beauty in the classroom: Professors' pulchritude and putative pedagogical productivity. Cambridge, MA: NBER.
Chicago
Hamermesh Daniel S, Parker Amy M and National Bureau Of Economic Research. 2003. Beauty in the classroom: Professors' pulchritude and putative pedagogical productivity. Cambridge, MA: NBER.
Harvard
Hamermesh D. S., Parker Amy M and National Bureau Of Economic Research. (2003). Beauty in the classroom: Professors' pulchritude and putative pedagogical productivity. Cambridge, MA: NBER.
MLA
Hamermesh Daniel S, Parker Amy M and National Bureau Of Economic Research. Beauty in the classroom: Professors' pulchritude and putative pedagogical productivity. Cambridge, MA: NBER. 2003.