APA (7th ed.) Citation

Dietrich, M., Appenzeller, I., Heidt, J., & Wagner, S. (2003). Elemental abundances in the broad emission line regions of quasars at redshifts larger than 4. Astronomy and astrophysics, 398(3), . https://doi.org/10.1051/0004-6361:20021697

Chicago Style (17th ed.) Citation

Dietrich, Matthias, Immo Appenzeller, Jochen Heidt, and Stefan Wagner. "Elemental Abundances in the Broad Emission Line Regions of Quasars at Redshifts Larger than 4." Astronomy and Astrophysics 398, no. 3 (2003). https://doi.org/10.1051/0004-6361:20021697.

MLA (9th ed.) Citation

Dietrich, Matthias, et al. "Elemental Abundances in the Broad Emission Line Regions of Quasars at Redshifts Larger than 4." Astronomy and Astrophysics, vol. 398, no. 3, 2003, https://doi.org/10.1051/0004-6361:20021697.