APA (7th ed.) Citation
Kang, B., Van der Kruijs, A., & Couper, D. (1989). Alley cropping for food crop production in the humid and subhumid tropics.
Chicago Style (17th ed.) Citation
Kang, B., A.C.M.B Van der Kruijs, and D.C Couper. Alley Cropping for Food Crop Production in the Humid and Subhumid Tropics. 1989.
MLA (9th ed.) Citation
Kang, B., et al. Alley Cropping for Food Crop Production in the Humid and Subhumid Tropics. 1989.
Warning: These citations may not always be 100% accurate.