Sarkar, A. K. (1992). Zero: Its role and prospects in Indian thought. South Asian Publ.
Citazione stile Chigago Style (17a edizione)Sarkar, Anil Kumar. Zero: Its Role and Prospects in Indian Thought. New Delhi: South Asian Publ, 1992.
Citatione MLA (8a ed.)Sarkar, Anil Kumar. Zero: Its Role and Prospects in Indian Thought. South Asian Publ, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.