Johnson, E.C., Etim, E.I. and Archibong, E.O. 2017. Isolation and Anti-oxidant Potentials of Parahydroxybenzaldehyde from the Methanol Leaf Extract of Aspilia Africana (Pers.) C.D. Adams (Asteraceae). Nigerian Journal of Pharmaceutical and Applied Science Research. 6, 1 (Mar. 2017), 26–32.