EI-SAYED, A.; SHAABAN, M. Monthly Monitoring of the Nutrient Status in Citrus Leaves as a Guide for Proper Fertilization. Journal of Agricultural and Marine Sciences [JAMS], [S. l.], v. 4, n. 1, p. 17–22, 1999. Disponível em: https://journals.squ.edu.om/index.php/jams/article/view/539. Acesso em: 2 may. 2024.