Dyfyniad APA

Nautiyal. Shivanand. (2012). Paryavaran: Samasya aur samadhan. Samayik prakashan.

Dyfyniad Arddull Chicago

Nautiyal. Shivanand. Paryavaran: Samasya Aur Samadhan. New Delhi: Samayik prakashan, 2012.

Dyfyniad MLA

Nautiyal. Shivanand. Paryavaran: Samasya Aur Samadhan. Samayik prakashan, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.