APA (7th ed.) Citation

Belton, M. J. S., Veverka, J., & Thomas, P. (1992). Galileo encounter with 951 Gaspra: First pictures of an asteroid. Science, 257, 1647. https://doi.org/10.1126/science.257.5077.1647

Chicago Style (17th ed.) Citation

Belton, M. J. S., J. Veverka, and P. Thomas. "Galileo Encounter with 951 Gaspra: First Pictures of an Asteroid." Science 257 (1992): 1647. https://doi.org/10.1126/science.257.5077.1647.

MLA (9th ed.) Citation

Belton, M. J. S., et al. "Galileo Encounter with 951 Gaspra: First Pictures of an Asteroid." Science, vol. 257, 1992, p. 1647, https://doi.org/10.1126/science.257.5077.1647.