APA (7th ed.) Citation

Krull, F. (1997). Soft X-ray excess in aktiven Galaxienkernen. F. Krull.

Chicago Style (17th ed.) Citation

Krull, Frank. Soft X-ray Excess in Aktiven Galaxienkernen. Tübingen, Charlottenstr. 11: F. Krull, 1997.

MLA (8th ed.) Citation

Krull, Frank. Soft X-ray Excess in Aktiven Galaxienkernen. F. Krull, 1997.