APA (7th ed.) Citation

Appenzeller, I., & Wagner, S. (1990). Probing the hidden secrets of Seyfert nuclei. The ESO messenger, 60, .

Chicago Style (17th ed.) Citation

Appenzeller, Immo, and Stefan Wagner. "Probing the Hidden Secrets of Seyfert Nuclei." The ESO Messenger 60 (1990).

MLA (9th ed.) Citation

Appenzeller, Immo, and Stefan Wagner. "Probing the Hidden Secrets of Seyfert Nuclei." The ESO Messenger, vol. 60, 1990.

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