SEMPREVIVO PHILIP G. (1982). SYSTEMS ANALYSIS.DEFINATIONS PROCESS AND DESIGN (2ND.). SCIENCE RESEARCH.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSEMPREVIVO PHILIP G. SYSTEMS ANALYSIS.DEFINATIONS PROCESS AND DESIGN. 2ND. I B M: SCIENCE RESEARCH, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSEMPREVIVO PHILIP G. SYSTEMS ANALYSIS.DEFINATIONS PROCESS AND DESIGN. 2ND. SCIENCE RESEARCH, 1982.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.