Mareh, Noora Shafea, and Shaimaa Ibrahim Mahmood Al-Refai. “Impact of Nitrogen Levels on Some Flower Growth Traits of Several Hibiscus (Hibiscus Sabdarriffa L.) Cultivars”. American Journal of Biology and Natural Sciences 2, no. 9 (September 29, 2025): 308–313. Accessed June 4, 2026. https://biojournals.us/index.php/AJBNS/article/view/1509.