Heald, M. (1970). The social responsibilities of business, company and community, 1900-1960. Press of Case Western Reserve University.
Lua i Stíl Chicago (17ú heag.)Heald, Morrell. The Social Responsibilities of Business, Company and Community, 1900-1960. Cleveland: Press of Case Western Reserve University, 1970.
Lua MLA (9ú heag.)Heald, Morrell. The Social Responsibilities of Business, Company and Community, 1900-1960. Press of Case Western Reserve University, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.