Lewis, C. L., Wickstrom, G. C., Kolar, M. M., Keyserling, T. C., Bognar, B. A., DuPre, C. T., & Hayden, J. (2000). Patient Preferences for Care by General Internists and Specialists in the Ambulatory Setting. Blackwell Science Inc.

Lewis, Carmen L., Glenda C. Wickstrom, Maria M. Kolar, Thomas C. Keyserling, Bryan A. Bognar, Connie T. DuPre, και Juliana Hayden. Patient Preferences for Care By General Internists and Specialists in the Ambulatory Setting. Blackwell Science Inc, 2000.

Lewis, Carmen L., et al. Patient Preferences for Care By General Internists and Specialists in the Ambulatory Setting. Blackwell Science Inc, 2000.