APA (7th ed.) Citation

(1975). Catalog of standard geomagnetic variation data. World Data Center A for Solar-Terrestrial Physics.

Chicago Style (17th ed.) Citation

Catalog of Standard Geomagnetic Variation Data. Boulder, Colorado: World Data Center A for Solar-Terrestrial Physics, 1975.

MLA (9th ed.) Citation

Catalog of Standard Geomagnetic Variation Data. World Data Center A for Solar-Terrestrial Physics, 1975.

Warning: These citations may not always be 100% accurate.