APA (7th ed.) Citation

Simms, I., Stephenson, J. M., Mallinson, H., Peeling, R. W., Thomas, K., Gokhale, R., . . . Hernon, M. (2006). Risk factors associated with pelvic inflammatory disease. Sexually Transmitted Infections, 82(6), 452. https://doi.org/10.1136/sti.2005.019539

Chicago Style (17th ed.) Citation

Simms, I., et al. "Risk Factors Associated with Pelvic Inflammatory Disease." Sexually Transmitted Infections 82, no. 6 (2006): 452. https://doi.org/10.1136/sti.2005.019539.

MLA (9th ed.) Citation

Simms, I., et al. "Risk Factors Associated with Pelvic Inflammatory Disease." Sexually Transmitted Infections, vol. 82, no. 6, 2006, p. 452, https://doi.org/10.1136/sti.2005.019539.