Παραπομπή APA

SHARMA B K. (2012). WATER POLLUTION (5the edition.). Krishna Prakashan Media (p) Ltd.

Παραπομπή Chicago Style

SHARMA B K. WATER POLLUTION. 5the edition. Meerut: Krishna Prakashan Media (p) Ltd, 2012.

Παραπομπή MLA

SHARMA B K. WATER POLLUTION. 5the edition. Krishna Prakashan Media (p) Ltd, 2012.