Heaton, H. (1977). Productivity in service organizations: Organizing for people. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Heaton, Herbert. Productivity in Service Organizations: Organizing for People. New York: McGraw-Hill, 1977.
Lua MLA (9ú heag.)Heaton, Herbert. Productivity in Service Organizations: Organizing for People. McGraw-Hill, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.