National Geophysical Research Institute (India). (1977). Observatories' data of the National Geophysical Research Institute, Hyderabad. National Geophysical Research Institute].
Čikaški stil citiranja (17. izdanje)National Geophysical Research Institute (India). Observatories' Data of the National Geophysical Research Institute, Hyderabad. [Hyderabad, India: National Geophysical Research Institute], 1977.
MLA način citiranja (8. izdanje)National Geophysical Research Institute (India). Observatories' Data of the National Geophysical Research Institute, Hyderabad. National Geophysical Research Institute], 1977.
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