APA ציטוט

Gurbachan Singh. (2009). Enhancing nutrient use efficiency in problem soils. Central Soil Salinity Research Institute.

Chicago Edition Citation

Gurbachan Singh. Enhancing Nutrient Use Efficiency in Problem Soils. Karnal: Central Soil Salinity Research Institute, 2009.

ציטוט MLA

Gurbachan Singh. Enhancing Nutrient Use Efficiency in Problem Soils. Central Soil Salinity Research Institute, 2009.