Rao, R. R. M., Sarma, M. R., Ramana, Y. V., & Vidyanath, A. (1977). Geography, world history and and civics (New impression.). Government of Andhra Pradesh.
Citazione stile Chigago Style (17a edizione)Rao, R. Ram Mohan, M. Radhakrishna Sarma, Y. V. Ramana, e A. Vidyanath. Geography, World History and and Civics. New impression. Hyderabad: Government of Andhra Pradesh, 1977.
Citatione MLA (9a ed.)Rao, R. Ram Mohan, et al. Geography, World History and and Civics. New impression. Government of Andhra Pradesh, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.