APA
Sarkar S., . (2016). Environmental Management (Hb 2016). : Intech.
Chicago
Sarkar S, . 2016. Environmental Management (Hb 2016). : Intech.
Harvard
Sarkar S., . (2016). Environmental Management (Hb 2016). : Intech.
MLA
Sarkar S, . Environmental Management (Hb 2016). : Intech. 2016.