APA Alıntı

(2012). Water and air quality directory 2012. Kerala Pollution Control Board.

Chicago Stili Alıntı

Water and Air Quality Directory 2012. Kerala Pollution Control Board, 2012.

MLA Alıntı

Water and Air Quality Directory 2012. Kerala Pollution Control Board, 2012.

Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..