ENGELMANN, H. O. (1966). Essays in social theory and social organization. WM. C. Brown Bo. Co.
Lua i Stíl Chicago (17ú heag.)ENGELMANN, Hugo O. Essays in Social Theory and Social Organization. Dubuque: WM. C. Brown Bo. Co, 1966.
Lua MLA (9ú heag.)ENGELMANN, Hugo O. Essays in Social Theory and Social Organization. WM. C. Brown Bo. Co, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.