Zollschan, G. K., Hirsch, W., & Martindale, D. (1976). Social change: Explorations, diagnoses and conjectures. Wiley.
Lua i Stíl Chicago (17ú heag.)Zollschan, George K., Walter Hirsch, agus Don Martindale. Social Change: Explorations, Diagnoses and Conjectures. New York: Wiley, 1976.
Lua MLA (9ú heag.)Zollschan, George K., et al. Social Change: Explorations, Diagnoses and Conjectures. Wiley, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.