APA (7th ed.) Citation

Heintz, K. (2011). An overview of how HIV still confounds scientists seeking a vaccine for this condition. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Heintz, Kurt. An Overview of How HIV Still Confounds Scientists Seeking a Vaccine for This Condition. Chicago, IL: Encyclopedia Britannica, 2011.

MLA (9th ed.) Citation

Heintz, Kurt. An Overview of How HIV Still Confounds Scientists Seeking a Vaccine for This Condition. Encyclopedia Britannica, 2011.