APA
Duflo E., Robinson Jonathan, Kremer Michael & National Bureau Of Economic Research. (2009). Nudging farmers to use fertilizer: Theory and experimental e. Cambridge: NBER.
Chicago
Duflo Esther, Robinson Jonathan, Kremer Michael and National Bureau Of Economic Research. 2009. Nudging farmers to use fertilizer: Theory and experimental e. Cambridge: NBER.
Harvard
Duflo E., Robinson Jonathan, Kremer Michael and National Bureau Of Economic Research. (2009). Nudging farmers to use fertilizer: Theory and experimental e. Cambridge: NBER.
MLA
Duflo Esther, Robinson Jonathan, Kremer Michael and National Bureau Of Economic Research. Nudging farmers to use fertilizer: Theory and experimental e. Cambridge: NBER. 2009.
