Joshua, P (2019). Photovoltaics — a path to sustainable futures. Afribary.com: Retrieved March 08, 2021, from https://afribary.com/works/photovoltaics-a-path-to-sustainable-futures
Pearce, Joshua. "Photovoltaics — a path to sustainable futures" Afribary.com. Afribary.com, 22 Apr. 2019, https://afribary.com/works/photovoltaics-a-path-to-sustainable-futures . Accessed 08 Mar. 2021.
Pearce, Joshua. "Photovoltaics — a path to sustainable futures". Afribary.com, Afribary.com, 22 Apr. 2019. Web. 08 Mar. 2021. < https://afribary.com/works/photovoltaics-a-path-to-sustainable-futures >.
Pearce, Joshua. "Photovoltaics — a path to sustainable futures" Afribary.com (2019). Accessed March 08, 2021. https://afribary.com/works/photovoltaics-a-path-to-sustainable-futures