Roy, C. (2014). Generating middle range theory: From evidence to practice. Springer Publishing Company.
Lua i Stíl Chicago (17ú heag.)Roy, Callista. Generating Middle Range Theory: From Evidence to Practice. New York: Springer Publishing Company, 2014.
Lua MLA (9ú heag.)Roy, Callista. Generating Middle Range Theory: From Evidence to Practice. Springer Publishing Company, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.