Sharma, D K, K L Sharma, C M Sharma, and S K Bhardwaj. 2012. “Effect of Different Phosphorus Sources on Yield and Quality of Tea (Camellia Sinensis) in a Hill Acid Soil”. The Indian Journal of Agricultural Sciences 65 (8). https://epubs.icar.org.in/index.php/IJAgS/article/view/18958.