OZTURK, O., and R. ADA. “Correlation and Path Coefficient Analysis of Yield and Quality Components of Some Sunflower (Helianthus Annuus L.) Cultivars”. Asian Journal of Chemistry, vol. 21, no. 2, June 2010, pp. 1400-12, https://asianpubs.org/index.php/ajchem/article/view/18839.