APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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