APA (7th ed.) Citation

Thomas, C. (2009). Roadblocks in HIV research: Five questions. Nature Medicine, 15(8), 855. https://doi.org/10.1038/nm0809-855

Chicago Style (17th ed.) Citation

Thomas, Clare. "Roadblocks in HIV Research: Five Questions." Nature Medicine 15, no. 8 (2009): 855. https://doi.org/10.1038/nm0809-855.

MLA (9th ed.) Citation

Thomas, Clare. "Roadblocks in HIV Research: Five Questions." Nature Medicine, vol. 15, no. 8, 2009, p. 855, https://doi.org/10.1038/nm0809-855.