APA aipamena

Lejk, M. (1998). An introduction to systems analysis techniques. London: Prentice-Hall.

Chicago Style aipamena

Lejk, Mark. An Introduction to Systems Analysis Techniques. London: Prentice-Hall, 1998.

MLA aipamena

Lejk, Mark. An Introduction to Systems Analysis Techniques. London: Prentice-Hall, 1998.

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