M. Nyalambisa, S.P. Songca, A.O. Oyedeji, I.A. Oyemitan. Saudi Pharmaceutical Journal; 2017. Volatile constituents and biological activities of the leaf and root of Echinacea species from South Africa.

M. Nyalambisa,, I.A. Oyemitan, B.N. Nkeh-Chungag, A.O. Oyedeji. Elsevier; 2016. Volatile constituents and biological activities of the leaf and root of Echinacea species from South Africa.