Black, H. (1909). Culture and restraint. F.H. Revell Company.
Lua i Stíl Chicago (17ú heag.)Black, Hugh. Culture and Restraint. New York, Chicago: F.H. Revell Company, 1909.
Lua MLA (8ú heag.)Black, Hugh. Culture and Restraint. F.H. Revell Company, 1909.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.