APA (7th ed.) Citation

D, H., E, J., JS, M., & IM, H. (2009). Helpful female subordinate cichlids are more likely to reproduce. PloS one, 4(5), e5458. https://doi.org/10.1371/journal.pone.0005458

Chicago Style (17th ed.) Citation

D, Heg, Jutzeler E, Mitchell JS, and Hamilton IM. "Helpful Female Subordinate Cichlids Are More Likely to Reproduce." PloS One 4, no. 5 (2009): e5458. https://doi.org/10.1371/journal.pone.0005458.

MLA (9th ed.) Citation

D, Heg, et al. "Helpful Female Subordinate Cichlids Are More Likely to Reproduce." PloS One, vol. 4, no. 5, 2009, p. e5458, https://doi.org/10.1371/journal.pone.0005458.