Παραπομπή APA

Rangarajan, M., & Sivaramakrishnan, K. (2012). India's environmental history. Permanent black.

Παραπομπή Chicago Style

Rangarajan, Mahesh, και K. Sivaramakrishnan. India's Environmental History. Ranikhet : Bangalore: Permanent black, 2012.

Παραπομπή MLA

Rangarajan, Mahesh, και K. Sivaramakrishnan. India's Environmental History. Permanent black, 2012.