Dickoff,J. , James, D. and Wiedenbach, E.Theory in a Practice Discipline, I: Practice Oriented TheoryNursing Research17: 415-435, Sept.-Oct., 1968a.
2.
Dickoff, J. , James, D., and Wiedenbach, E.Theory in a Practice Discipline, IL: Practice Oriented Research. Nursing Research17: 545-554, Nov.-Dec., 1968b.