Andhra Pradesh (India). Agriculture Dept. (1968). Soil survey scheme, Nagarjunasagar Project. Printed by the Director of Print., Govt. of Andhra Pradesh at the Govt. Central Press.
Chicago-referens (17:e uppl.)Andhra Pradesh (India). Agriculture Dept. Soil Survey Scheme, Nagarjunasagar Project. Hyderabad: Printed by the Director of Print., Govt. of Andhra Pradesh at the Govt. Central Press, 1968.
MLA-referens (8:e uppl.)Andhra Pradesh (India). Agriculture Dept. Soil Survey Scheme, Nagarjunasagar Project. Printed by the Director of Print., Govt. of Andhra Pradesh at the Govt. Central Press, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.