Παραπομπή APA

Ram Kumar. (2000). Environmental biodegradation (1st.). Sarup & Sons.

Παραπομπή Chicago Style

Ram Kumar. Environmental Biodegradation. 1st. New Delhi: Sarup & Sons, 2000.

Παραπομπή MLA

Ram Kumar. Environmental Biodegradation. 1st. Sarup & Sons, 2000.