Pounds, K. A., Reeves, J. N., Page, K. L., Edelson, R., Matt, G., & Perola, G. C. (2003). A simultaneous XMM–Newton and BeppoSAX observation of the archetypal broad line Seyfert 1 galaxy NGC 5548. Monthly Notices of the Royal Astronomical Society, 341(3), 953. https://doi.org/10.1046/j.1365-8711.2003.06470.x
Chicago Style (17th ed.) CitationPounds, K. A., J. N. Reeves, K. L. Page, R. Edelson, G. Matt, and G. C. Perola. "A Simultaneous XMM–Newton and BeppoSAX Observation of the Archetypal Broad Line Seyfert 1 Galaxy NGC 5548." Monthly Notices of the Royal Astronomical Society 341, no. 3 (2003): 953. https://doi.org/10.1046/j.1365-8711.2003.06470.x.
MLA (9th ed.) CitationPounds, K. A., et al. "A Simultaneous XMM–Newton and BeppoSAX Observation of the Archetypal Broad Line Seyfert 1 Galaxy NGC 5548." Monthly Notices of the Royal Astronomical Society, vol. 341, no. 3, 2003, p. 953, https://doi.org/10.1046/j.1365-8711.2003.06470.x.