Operario, D., Underhill, K., Chuong, C., & Cluver, L. (2011). HIV infection and sexual risk behaviour among youth who have experienced orphanhood: Systematic review and meta-analysis. BioMed Central.
芝加哥风格引文Operario, D., K. Underhill, C. Chuong, 与 L. Cluver. HIV Infection and Sexual Risk Behaviour Among Youth Who Have Experienced Orphanhood: Systematic Review and Meta-analysis. BioMed Central, 2011.
MLA引文Operario, D., et al. HIV Infection and Sexual Risk Behaviour Among Youth Who Have Experienced Orphanhood: Systematic Review and Meta-analysis. BioMed Central, 2011.
警告：这些引文格式不一定是100％准确.