1. Werley HH Lang NM . Preface. In Werley HH Lang NM (eds): Identification of the Nursing Minimum Data Set. New York, Springer, 1987, p. xvii.
2. American Nurses' Association, Committee on Research and Studies. ANA blueprint for research in nursing. Am J Nurs 1962;62:69–71.
3. Werley HH Grier MR . Preface. In Werley HH Grier MR (eds): Nursing Information Systems. New York, Springer Publishing Company, 1981, p. ix.
4. Werley HH Grier MR . Research directions. In Werley HH Grier MR (eds): Nursing Information Systems. New York, Springer Publishing Company, 1981, pp. 315–322.
5. Werley HH Lang NM . (eds). Identification of the Nursing Minimum Data Set. New York, Springer Publishing Company, 1988.