RAO, D S; PUNIA, B L; AHUJA, D B. Performance of castor (Ricinus communis) cultivars and their response to fertilizer and plant protection. The Indian Journal of Agricultural Sciences, Delhi, India, v. 65, n. 9, 2012. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/19062. Acesso em: 29 oct. 2025.