APA (7th ed.) Citation

Köhnlein, W. A model of the Ionosphere in the altitude interval 50 - 4000 km. Wiss. Berichtswesen d. DFVLR.

Chicago Style (17th ed.) Citation

Köhnlein, Walter. A Model of the Ionosphere in the Altitude Interval 50 - 4000 Km. Köln: Wiss. Berichtswesen d. DFVLR.

MLA (9th ed.) Citation

Köhnlein, Walter. A Model of the Ionosphere in the Altitude Interval 50 - 4000 Km. Wiss. Berichtswesen d. DFVLR.

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