APA
Hoffer .A. Jeffrey, George F. Joey and Valacich S. Joseph, . (1999). Modern Systems Analysis. New York: Addison Wesley Longman Inc.
Chicago
Hoffer .A. Jeffrey, George F. Joey and Valacich S. Joseph, . 1999. Modern Systems Analysis. New York: Addison Wesley Longman Inc.
Harvard
Hoffer .A. Jeffrey, George F. Joey and Valacich S. Joseph, . (1999). Modern Systems Analysis. New York: Addison Wesley Longman Inc.
MLA
Hoffer .A. Jeffrey, George F. Joey and Valacich S. Joseph, . Modern Systems Analysis. New York: Addison Wesley Longman Inc. 1999.