Nautiyal. Shivanand. (2012). Paryavaran: Samasya aur samadhan. Samayik prakashan.
Style de citation ChicagoNautiyal. Shivanand. Paryavaran: Samasya Aur Samadhan. New Delhi: Samayik prakashan, 2012.
Style de citation MLANautiyal. Shivanand. Paryavaran: Samasya Aur Samadhan. Samayik prakashan, 2012.
Attention : ces citations peuvent ne pas être correctes à 100%.