Παραπομπή APA

Chhatwal, G. R. (1997). Encyclopaodia of Environment alanalysis. Anmol.

Παραπομπή Chicago Style

Chhatwal, Gurdeep R. Encyclopaodia of Environment Alanalysis. New Delhi: Anmol, 1997.

Παραπομπή MLA

Chhatwal, Gurdeep R. Encyclopaodia of Environment Alanalysis. Anmol, 1997.