Style de citation APA

(2011). Water and air quality directory 2011. Kerala state pollution control board.

Style de citation Chicago

Water and Air Quality Directory 2011. Thiruvananthapuram: Kerala state pollution control board, 2011.

Style de citation MLA

Water and Air Quality Directory 2011. Kerala state pollution control board, 2011.

Attention : ces citations peuvent ne pas être correctes à 100%.