Citazione Stile APA (7a Edizione)

Cavallo, R. E. (1979). The role of systems methodology in social science research. Martinus Nijhoff.

Citazione stile Chigago Style (17a edizione)

Cavallo, Roger E.. The Role of Systems Methodology in Social Science Research. Boston ; London: Martinus Nijhoff, 1979.

Citatione MLA (9a ed.)

Cavallo, Roger E.. The Role of Systems Methodology in Social Science Research. Martinus Nijhoff, 1979.