De Costa, W.A.J.M. and Liyanage, L.P., 1997. Effect of potassium and water availability on water use efficiency of common bean (Phaseolus vulgaris L.). Journal of the National Science Foundation of Sri Lanka, 25(4), pp.241–254. DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038

De Costa WAJM, Liyanage LP. Effect of potassium and water availability on water use efficiency of common bean (Phaseolus vulgaris L.). Journal of the National Science Foundation of Sri Lanka. 1997;25(4):241–54. DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038

De Costa, W. A. J. M., & Liyanage, L. P. (1997). Effect of potassium and water availability on water use efficiency of common bean (Phaseolus vulgaris L.). Journal of the National Science Foundation of Sri Lanka, 25(4), 241–254. DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038

De Costa WAJM and Liyanage LP, ‘Effect of Potassium and Water Availability on Water Use Efficiency of Common Bean (phaseolus Vulgaris L.)’ (1997) 25 Journal of the National Science Foundation of Sri Lanka 241 DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038

De Costa, W.A.J.M., and L.P. Liyanage. 1997. “Effect of Potassium and Water Availability on Water Use Efficiency of Common Bean (phaseolus Vulgaris L.)”. Journal of the National Science Foundation of Sri Lanka 25 (4): 241–54. DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038

De Costa, W.A.J.M., and L.P. Liyanage. “Effect of Potassium and Water Availability on Water Use Efficiency of Common Bean (phaseolus Vulgaris L.)”. Journal of the National Science Foundation of Sri Lanka 25, no. 4 (1997): 241–54. DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038

De Costa, W. A. J. M.and L. P. Liyanage. “Effect of Potassium and Water Availability on Water Use Efficiency of Common Bean (phaseolus Vulgaris L.)”. Journal of the National Science Foundation of Sri Lanka, vol. 25, no. 4, 1997, pp. 241–54. DOI: http://doi.org/10.4038/jnsfsr.v25i4.5038