KARACA ÖNER, E., Şahane F. ARSLANOĞLU, and R. . İSKENDER. “Determination of the Effects of Different Nitrogen and Phosphorus Applications On Leaf Area of Echinacea (Echinacea Purpurea L.)”. ISPEC Journal of Agricultural Sciences, vol. 7, no. 1, Mar. 2023, pp. 53-59, doi:10.5281/zenodo.7717862.