Rafael, E. F. (2013). Technology as a social system: A system theoretical conceptualization. Philippine Sociological Review.
Lua i Stíl Chicago (17ú heag.)Rafael, Erwin F. "Technology as a Social System: A System Theoretical Conceptualization." Philippine Sociological Review 2013.
Lua MLA (9ú heag.)Rafael, Erwin F. "Technology as a Social System: A System Theoretical Conceptualization." Philippine Sociological Review, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.