APA (7th ed.) Citation

Sierks, H., Lamy, P., Koschny, D., Rickman, H., Rodrigo, R., A'Hearn, M. F., . . . Naletto, G. (2011). Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System. Science, 334(6055), 487.

Chicago Style (17th ed.) Citation

Sierks, H., et al. "Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System." Science 334, no. 6055 (2011): 487.

MLA (9th ed.) Citation

Sierks, H., et al. "Images of Asteroid 21 Lutetia: A Remnant Planetesimal from the Early Solar System." Science, vol. 334, no. 6055, 2011, p. 487.