APA
Okpara J., . (2016). Climate Change Vol 3 (Hb 2016). : Intech.
Chicago
Okpara J, . 2016. Climate Change Vol 3 (Hb 2016). : Intech.
Harvard
Okpara J., . (2016). Climate Change Vol 3 (Hb 2016). : Intech.
MLA
Okpara J, . Climate Change Vol 3 (Hb 2016). : Intech. 2016.