Littlefield, C. L., & Rachel, F. (1971). Office and administrative management ; systems analysis, data processing, and office services. Prentice-Hall.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Littlefield, Cleatice L., و Frank Rachel. Office and Administrative Management ; Systems Analysis, Data Processing, and Office Services. englewood Cliffs, N. J: Prentice-Hall, 1971.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Littlefield, Cleatice L., و Frank Rachel. Office and Administrative Management ; Systems Analysis, Data Processing, and Office Services. Prentice-Hall, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.