Cita APA

Ronald, P. J., Robertson, J. R., Wyld, R., & Weightman, R. (1993). Heterosexual transmission of HIV in injecting drug users.

Chicago Style Citation

Ronald, P J., J R. Robertson, R. Wyld, i R. Weightman. Heterosexual Transmission of HIV in Injecting Drug Users. 1993.

Cita MLA

Ronald, P J., J R. Robertson, R. Wyld, i R. Weightman. Heterosexual Transmission of HIV in Injecting Drug Users. 1993.