Littlefield, C. L., & Rachel, F. (1964). Office and administrative management ; systems analysis, data processing, and office services. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Littlefield, Cleatice L., agus Frank Rachel. Office and Administrative Management ; Systems Analysis, Data Processing, and Office Services. Englewood Cliffs, N. J: Prentice-Hall, 1964.
Lua MLA (9ú heag.)Littlefield, Cleatice L., agus Frank Rachel. Office and Administrative Management ; Systems Analysis, Data Processing, and Office Services. Prentice-Hall, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.