APA (7th ed.) Citation
Spielman, D. J., Mekonnen, D. K., & Alemu, D. (2012). Seed, fertilizer, and agricultural extension in Ethiopia. University of Pennsylvania Press.
Chicago Style (17th ed.) Citation
Spielman, David J., Dawit Kelemework Mekonnen, and Dawit Alemu. Seed, Fertilizer, and Agricultural Extension in Ethiopia. University of Pennsylvania Press, 2012.
MLA (9th ed.) Citation
Spielman, David J., et al. Seed, Fertilizer, and Agricultural Extension in Ethiopia. University of Pennsylvania Press, 2012.
Warning: These citations may not always be 100% accurate.