Gaya APA

FitzGerald, J., FitzGerald, A. (1987). Fundamentals of Systems Analysis: using structured analysis and Design Techniques, third edition . New York: John Wiley & Sons, Inc.

Gaya MLA

FitzGerald, Jeffry., FitzGerald, Andra. "Fundamentals of Systems Analysis: using structured analysis and Design Techniques, third edition". New York: John Wiley & Sons, Inc, 1987. Text.