Heiskanen, I. (1967). Theoretical approaches and scientific strategies in administrative and organizational research: A methodological study. Societas scientiarum Fennica.
Lua i Stíl Chicago (17ú heag.)Heiskanen, Ilkka. Theoretical Approaches and Scientific Strategies in Administrative and Organizational Research: A Methodological Study. Helsingfors: Societas scientiarum Fennica, 1967.
Lua MLA (8ú heag.)Heiskanen, Ilkka. Theoretical Approaches and Scientific Strategies in Administrative and Organizational Research: A Methodological Study. Societas scientiarum Fennica, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.