SINGH, MANJINDER, et al. “Varietal Evaluation of Double Type Tuberose (Agave Amica) under Punjab Conditions and Their Categorization Using DUS Guidelines”. Journal of Ornamental Horticulture, vol. 27, no. 1, July 2024, pp. 51-57, https://epubs.icar.org.in/index.php/JOH/article/view/153896.