Long, L. E., & Long, N. (1997). Introduction to computers & information systems (5th ed., the Internet ed.). Prentice Hall.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Long, Larry E., و Nancy Long. Introduction to Computers & Information Systems. 5th ed., the Internet ed. Upper Saddle River, NJ: Prentice Hall, 1997.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Long, Larry E., و Nancy Long. Introduction to Computers & Information Systems. 5th ed., the Internet ed. Prentice Hall, 1997.