Gaya APA

NJUKENG, J, N. et al (2011). Validation of land evaluation methods for performance assessment of traditional agroforestry systems . Hamburg-Germany: vTI.

Gaya MLA

NJUKENG, Jetro, N.. et al. "Validation of land evaluation methods for performance assessment of traditional agroforestry systems". Hamburg-Germany: vTI, 2011. Artikel.