PATIDAR, KAVITA, et al. “Effect of Plant Growth Regulators on Growth and Flowering of Calendula (Calendula Officinalis L.) under Malwa Plateau of M.P”. Journal of Ornamental Horticulture, vol. 27, no. 1, July 2024, pp. 76-81, https://epubs.icar.org.in/index.php/JOH/article/view/153903.