Mueller, J., & Williams, R. A. (1996). Novell certification handbook (2nd ed.). McGraw-Hill.

Mueller, John, and Robert A. Williams. Novell Certification Handbook. 2nd ed. New York: McGraw-Hill, 1996.

Mueller, John, and Robert A. Williams. Novell Certification Handbook. 2nd ed. McGraw-Hill, 1996.