Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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