Southworth, J., Liebig, C., & Zimmer, F. (2009). Physical properties of the 0.94-day period transiting planetary system WASP-18. The astrophysical journal, 707(1), . https://doi.org/10.1088/0004-637X/707/1/167
Chicago Style (17th ed.) CitationSouthworth, John, Christine Liebig, and Fabian Zimmer. "Physical Properties of the 0.94-day Period Transiting Planetary System WASP-18." The Astrophysical Journal 707, no. 1 (2009). https://doi.org/10.1088/0004-637X/707/1/167.
MLA (9th ed.) CitationSouthworth, John, et al. "Physical Properties of the 0.94-day Period Transiting Planetary System WASP-18." The Astrophysical Journal, vol. 707, no. 1, 2009, https://doi.org/10.1088/0004-637X/707/1/167.
Warning: These citations may not always be 100% accurate.