APA (7th ed.) Citation

Iversen, A., Learn, G., Fugger, L., Gerstoft, J., Mullins, J., & Skinhoj, P. (1999). Presence of multiple HIV subtypes and a high frequency of subtype chimeric viruses in heterosexually infected women.

Chicago Style (17th ed.) Citation

Iversen, A., G. Learn, L. Fugger, J. Gerstoft, J. Mullins, and P. Skinhoj. Presence of Multiple HIV Subtypes and a High Frequency of Subtype Chimeric Viruses in Heterosexually Infected Women. 1999.

MLA (9th ed.) Citation

Iversen, A., et al. Presence of Multiple HIV Subtypes and a High Frequency of Subtype Chimeric Viruses in Heterosexually Infected Women. 1999.