APA (7th ed.) Citation

AL, S., RW, K., & DM, H. (1990). Caloris Basin: An Enhanced Source for Potassium in Mercury's Atmosphere. Science (New York, N.Y.), 249(4973), 1140. https://doi.org/10.1126/science.249.4973.1140

Chicago Style (17th ed.) Citation

AL, Sprague, Kozlowski RW, and Hunten DM. "Caloris Basin: An Enhanced Source for Potassium in Mercury's Atmosphere." Science (New York, N.Y.) 249, no. 4973 (1990): 1140. https://doi.org/10.1126/science.249.4973.1140.

MLA (9th ed.) Citation

AL, Sprague, et al. "Caloris Basin: An Enhanced Source for Potassium in Mercury's Atmosphere." Science (New York, N.Y.), vol. 249, no. 4973, 1990, p. 1140, https://doi.org/10.1126/science.249.4973.1140.