Dyfyniad APA

National Geophysical Research Institute (India). (1977). Observatories' data of the National Geophysical Research Institute, Hyderabad. National Geophysical Research Institute].

Dyfyniad Arddull Chicago

National Geophysical Research Institute (India). Observatories' Data of the National Geophysical Research Institute, Hyderabad. [Hyderabad, India: National Geophysical Research Institute], 1977.

Dyfyniad MLA

National Geophysical Research Institute (India). Observatories' Data of the National Geophysical Research Institute, Hyderabad. National Geophysical Research Institute], 1977.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.