Beck, E. J., Cunningham, D. G., Moss, V. W., Harris, J. R., Pinching, A. J., & Jeffries, D. J. (1987). HIV testing: Changing trends at a clinic for sexually transmitted diseases in London.

Beck, E J., D G. Cunningham, V W. Moss, J R. Harris, A J. Pinching, and D J. Jeffries. HIV Testing: Changing Trends At a Clinic for Sexually Transmitted Diseases in London. 1987.

Beck, E J., et al. HIV Testing: Changing Trends At a Clinic for Sexually Transmitted Diseases in London. 1987.