Walker, N., Stover, J., Stanecki, K., Zaniewski, A., Grassly, N., Garcia-Calleja, J., & Ghys, P. (2004). The workbook approach to making estimates and projecting future scenarios of HIV/AIDS in countries with low level and concentrated epidemics. BMJ Group.

Walker, N., J. Stover, K. Stanecki, A. Zaniewski, N. Grassly, J. Garcia-Calleja, و P. Ghys. The Workbook Approach to Making Estimates and Projecting Future Scenarios of HIV/AIDS in Countries With Low Level and Concentrated Epidemics. BMJ Group, 2004.

Walker, N., et al. The Workbook Approach to Making Estimates and Projecting Future Scenarios of HIV/AIDS in Countries With Low Level and Concentrated Epidemics. BMJ Group, 2004.