Schaefer, R. T. (2019). Sociology: A brief introduction (Thirteenth edition.). McGraw-Hill Education.
Lua i Stíl Chicago (17ú heag.)Schaefer, Richard T. Sociology: A Brief Introduction. Thirteenth edition. New York, NY: McGraw-Hill Education, 2019.
Lua MLA (8ú heag.)Schaefer, Richard T. Sociology: A Brief Introduction. Thirteenth edition. McGraw-Hill Education, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.