G. Haggag, Eman, S.M. Abdel Wahab, S.M. El-Zalabany, E.A. Abou Moustafa, E.M. El-Kherasy, and Tom J. Mabry. 2010. “Volatile Oils and Pectins from Citrus Aurantifolia (Lime) and Citrus Limonia (lemon)”. Asian Journal of Chemistry 10 (4):728-33. https://asianpubs.org/index.php/ajchem/article/view/23732.