Não informado. (1919). Personnel: The management of people at work. American Management Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Personnel: The Management of People at Work. New York: American Management Association, 1919.
Lua MLA (8ú heag.)Não informado. Personnel: The Management of People at Work. American Management Association, 1919.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.