APA (7th ed.) Citation

H, S., P, L., C, B., D, K., H, R., R, R., . . . Snodgrass, C. (2011). Images of asteroid 21 lutetia: A remnant planetesimal from the early solar system. Science, 334(6055), 487.

Chicago Style (17th ed.) Citation

H, Sierks, 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

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