APA (7th ed.) Citation

JH, C. (2004). What do your authors do? Eye (London, England), 18(1), 111. https://doi.org/10.1038/sj.eye.6700540

Chicago Style (17th ed.) Citation

JH, Cook. "What Do Your Authors Do?" Eye (London, England) 18, no. 1 (2004): 111. https://doi.org/10.1038/sj.eye.6700540.

MLA (9th ed.) Citation

JH, Cook. "What Do Your Authors Do?" Eye (London, England), vol. 18, no. 1, 2004, p. 111, https://doi.org/10.1038/sj.eye.6700540.