Rafael, E. F. (2013). Technology as a social system: A system theoretical conceptualization. Philippine Sociological Review.
Citazione stile Chigago Style (17a edizione)Rafael, Erwin F. "Technology as a Social System: A System Theoretical Conceptualization." Philippine Sociological Review 2013.
Citatione MLA (9a ed.)Rafael, Erwin F. "Technology as a Social System: A System Theoretical Conceptualization." Philippine Sociological Review, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.