APA (7th ed.) Citation

Llewellyn, R. W. (1976). Information systems / (by) Robert W. Llewellyn. Prentice-Hall.

Chicago Style (17th ed.) Citation

Llewellyn, Robert Warren. Information Systems / (by) Robert W. Llewellyn. Englewood Cliffs ; London (etc.): Prentice-Hall, 1976.

MLA (9th ed.) Citation

Llewellyn, Robert Warren. Information Systems / (by) Robert W. Llewellyn. Prentice-Hall, 1976.

Warning: These citations may not always be 100% accurate.