APA (7th ed.) Citation
Ek, G. v., Henriet, J., Blade, S., & Singh, B. (1997). Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria II. Management and productivity of major cropping systems.
Chicago Style (17th ed.) Citation
Ek, G.A. van, J. Henriet, S. Blade, and B. Singh. Quantitative Assessment of Traditional Cropping Systems in the Sudan Savanna of Northern Nigeria II. Management and Productivity of Major Cropping Systems. 1997.
MLA (9th ed.) Citation
Ek, G.A. van, et al. Quantitative Assessment of Traditional Cropping Systems in the Sudan Savanna of Northern Nigeria II. Management and Productivity of Major Cropping Systems. 1997.
Warning: These citations may not always be 100% accurate.