APA Citatie

(2013). Water & air quality directory 2013. Kerala State Pollution Control Board.

Chicago Style citaat

Water & Air Quality Directory 2013. Thiruvananthapuram: Kerala State Pollution Control Board, 2013.

MLA citatie

Water & Air Quality Directory 2013. Kerala State Pollution Control Board, 2013.

Let op: Deze citaties zijn niet altijd 100% accuraat.