APA-viite (7. p.)

Nelson, K. E., Galai, N., Safaeian, M., Strathdee, S. A., Celentano, D. D., & Vlahov, D. (2002). Temporal Trends in the Incidence of Human Immunodeficiency Virus Infection and Risk Behavior among Injection Drug Users in Baltimore, Maryland, 1988-1998.

Chicago-viite (17. p.)

Nelson, Kenrad E., Noya Galai, Mahboobeh Safaeian, Steffanie A. Strathdee, David D. Celentano, ja David Vlahov. Temporal Trends in the Incidence of Human Immunodeficiency Virus Infection and Risk Behavior Among Injection Drug Users in Baltimore, Maryland, 1988-1998. 2002.

MLA-viite (9. p.)

Nelson, Kenrad E., et al. Temporal Trends in the Incidence of Human Immunodeficiency Virus Infection and Risk Behavior Among Injection Drug Users in Baltimore, Maryland, 1988-1998. 2002.