Idris, A.; Linatoc, A. C.; Aliyu, A. M.; Muhammad, S. M.; Bakar, M. F. B. A. Effect of Light on the Photosynthesis, Pigment Content and Stomatal Density of Sun and Shade Leaves of Vernonia Amygdalina. IJET 2018, 7 (4.30), 209-212. https://doi.org/10.14419/ijet.v7i4.30.22122.