Lazenby, H. C., Levit, K. R., Waldo, D. R., Adler, G. S., Letsch, S. W., & Cowan, C. A. (1992). National health accounts: Lessons from the U.S. experience. CENTERS for MEDICARE & MEDICAID SERVICES.

Lazenby, Helen C., Katharine R. Levit, Daniel R. Waldo, Gerald S. Adler, Suzanne W. Letsch, ja Cathy A. Cowan. National Health Accounts: Lessons From the U.S. Experience. CENTERS for MEDICARE & MEDICAID SERVICES, 1992.

Lazenby, Helen C., et al. National Health Accounts: Lessons From the U.S. Experience. CENTERS for MEDICARE & MEDICAID SERVICES, 1992.