1. Kokwaro, J. O.Medicinal Plantsof East Africa; East African Literature Bureau: Kampala, Nairobi, Dar es Salaam, 1976; p 190.
2. Complete proton and13C NMR spectral assignments of pentalongin
3. Screening of medicinal plants of rwanda for acaricidal activity
4. El-Hady, S. Isolation and Structural Elucidation of Natural Products fromPentas longifloraOliver andGossypioides kirkii(Mast.) J.B. Hutch. Ph.D. Thesis, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Ghent, Belgium, 1999.