Determining the focus of nursing research. Barnard K. MCN Am J Matern Child Nurs. 1982 Sep-Oct;7(5):299. doi: 10.1097/00005721-198209000-00009. PMID: 6811817
The research question. Barnard K. MCN Am J Matern Child Nurs. 1981 May-Jun;6(3):211. doi: 10.1097/00005721-198105000-00022. PMID: 6787370
[Position of a case study in nursing research]. Hashi A, Fujihara A. Kango Tenbo. 1977 Dec;2(12):1063-7. PMID: 244692
[Research extension and method development "as a self-evident process"]. Hermansson A. Tidskr Sjukvardspedagog. 1979;26(1):12-3. PMID: 256306