P. A. Baloch, B. A. Abro, A. H. Solangi, and A. A. Siddiqui, “Growth and Yield Characteristics of Chilli as Affected by Nitrogen in Presence and Absence of Phosphorus and Potassium: Nitrogen for Growth and Yield of Chilli”, Pakistan Journal of Scientific & Industrial Research, vol. 56, no. 2, pp. 70–75, Aug. 2013.