Sisk, H. L. (1977). Management & organization (3rd ed.). South - Western.
Lua i Stíl Chicago (17ú heag.)Sisk, Henry L. Management & Organization. 3rd ed. Chicago: South - Western, 1977.
Lua MLA (9ú heag.)Sisk, Henry L. Management & Organization. 3rd ed. South - Western, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.