APA (7th ed.) Citation

SM, B., SA, P., & CB, S. (2011). Earliest directly-dated human skull-cups. PloS one, 6(2), e17026. https://doi.org/10.1371/journal.pone.0017026

Chicago Style (17th ed.) Citation

SM, Bello, Parfitt SA, and Stringer CB. "Earliest Directly-dated Human Skull-cups." PloS One 6, no. 2 (2011): e17026. https://doi.org/10.1371/journal.pone.0017026.

MLA (9th ed.) Citation

SM, Bello, et al. "Earliest Directly-dated Human Skull-cups." PloS One, vol. 6, no. 2, 2011, p. e17026, https://doi.org/10.1371/journal.pone.0017026.