Uusküla, A., Johnston, L. G., Raag, M., Trummal, A., Talu, A., & Des Jarlais, D. C. (2010). Evaluating Recruitment among Female Sex Workers and Injecting Drug Users at Risk for HIV Using Respondent-driven Sampling in Estonia. Springer US.

Uusküla, Anneli, Lisa G. Johnston, Mait Raag, Aire Trummal, Ave Talu, and Don C. Des Jarlais. Evaluating Recruitment Among Female Sex Workers and Injecting Drug Users At Risk for HIV Using Respondent-driven Sampling in Estonia. Springer US, 2010.

Uusküla, Anneli, et al. Evaluating Recruitment Among Female Sex Workers and Injecting Drug Users At Risk for HIV Using Respondent-driven Sampling in Estonia. Springer US, 2010.