APA (7th ed.) Citation

(1957). Ionosphären-Daten: Freiburg, URSI-Code 131. Inst.

Chicago Style (17th ed.) Citation

Ionosphären-Daten: Freiburg, URSI-Code 131. Freiburg, Br: Inst, 1957.

MLA (9th ed.) Citation

Ionosphären-Daten: Freiburg, URSI-Code 131. Inst, 1957.

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