Citazione Stile APA (7a Edizione)

Sharma, P. D. (2013). Ecology and environment (11th rev. ed.). Rastogi Publications.

Citazione stile Chigago Style (17a edizione)

Sharma, P. D. Ecology and Environment. 11th rev. ed. Meerut: Rastogi Publications, 2013.

Citatione MLA (9a ed.)

Sharma, P. D. Ecology and Environment. 11th rev. ed. Rastogi Publications, 2013.