1. Banfield, E. C. Ends and means in planning. In S. Mailick, & E. H. Van Ness (Eds.)Concepts and issues in administrative behavior, Englewood Cliffs, N. J.: Prentice-Hall, 1962. Pp. 70–80.
2. Commonwealth of Massachusetts.Constitution, Articles of Amendment. No, 40: Section 2, Section 3.
3. World Health Organization. Suggested outline for use by countries in discussing health education of the public. A12/Technical Discussions/1, March 31, 1958.