APA
Bellora C. e. a., National Bureau of Economic Research, . (2017). Estimating the impact of crop diversity on agricultural productivity in South Africa. Cambridge: NBER.
Chicago
Bellora Cecilia et al, National Bureau of Economic Research, . 2017. Estimating the impact of crop diversity on agricultural productivity in South Africa. Cambridge: NBER.
Harvard
Bellora C. e. a., National Bureau of Economic Research, . (2017). Estimating the impact of crop diversity on agricultural productivity in South Africa. Cambridge: NBER.
MLA
Bellora Cecilia et al, National Bureau of Economic Research, . Estimating the impact of crop diversity on agricultural productivity in South Africa. Cambridge: NBER. 2017.