APA
National Council of Applied Economic Research (New Delhi), National Council of Applied Economic Research (New Delhi), . (1970). Survey of backward districts of Andhra Pradesh. New Delhi: The Author.
Chicago
National Council of Applied Economic Research (New Delhi), National Council of Applied Economic Research (New Delhi), . 1970. Survey of backward districts of Andhra Pradesh. New Delhi: The Author.
Harvard
National Council of Applied Economic Research (New Delhi), National Council of Applied Economic Research (New Delhi), . (1970). Survey of backward districts of Andhra Pradesh. New Delhi: The Author.
MLA
National Council of Applied Economic Research (New Delhi), National Council of Applied Economic Research (New Delhi), . Survey of backward districts of Andhra Pradesh. New Delhi: The Author. 1970.
