Cita APA (7a ed.)
Henriet, J., Ek, G. v., Blade, S., & Singh, B. (1997). Quantitative assessment of traditional cropping systems in the Sudan savanna of northern Nigeria: I. Rapid survey of prevalent cropping systems.
Cita Chicago Style (17a ed.)
Henriet, J., G.A. van Ek, S. Blade, y B. Singh. Quantitative Assessment of Traditional Cropping Systems in the Sudan Savanna of Northern Nigeria: I. Rapid Survey of Prevalent Cropping Systems. 1997.
Cita MLA (9a ed.)
Henriet, J., et al. Quantitative Assessment of Traditional Cropping Systems in the Sudan Savanna of Northern Nigeria: I. Rapid Survey of Prevalent Cropping Systems. 1997.
Precaución: Estas citas no son 100% exactas.