APA (7th ed.) Citation

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

MLA (9th ed.) Citation

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