Ayoola, P., Adeyeye, A. and Onawumi, O. (2010) “Trace Elements and Major Minerals Evaluation of Spondias mombin, Vernonia amygdalina and Momordica charantia Leaves”, Pakistan Journal of Nutrition, 9(8), pp. 755–758. doi:10.3923/pjn.2010.755.758.