APA (7th ed.) Citation

Dietrich, M., Appenzeller, I., Wagner, S., Seifert, W., Stahl, O., & Szeifert, T. (1999). Spectroscopic study of high redshift quasars. Astronomy and astrophysics, 352, .

Chicago Style (17th ed.) Citation

Dietrich, Matthias, Immo Appenzeller, Stefan Wagner, Walter Seifert, Otmar Stahl, and Thomas Szeifert. "Spectroscopic Study of High Redshift Quasars." Astronomy and Astrophysics 352 (1999).

MLA (9th ed.) Citation

Dietrich, Matthias, et al. "Spectroscopic Study of High Redshift Quasars." Astronomy and Astrophysics, vol. 352, 1999.